View source for Abu Bakr al-Razi

{{Short description|10th-century Iranian physician and polymath}}
{{About|the 10th-century physician and polymath|the 12th-century theologian and polymath|Fakhr al-Din al-Razi|other uses|Razi (disambiguation)}}
{{Use dmy dates|date=July 2018}}
{{Infobox philosopher
| era              = [[Islamic Golden Age]]
| image            = زکریای رازی اثر حسین بهزاد (cropped).jpg
| alt              = Statue of al-Razi in Vienna
| caption          = Portrait by [[Hossein Behzad]], 1962
| name             = Abū Bakr al-Rāzī
| birth_date       = 864 or 865&nbsp;CE<br>250 or 251&nbsp;[[Hijri year|AH]]
| birth_place      = [[Rey, Iran|Ray]] (Iran)
| death_date       = {{death year and age|925|864}}&nbsp;CE or<br>{{death year and age|935|864}}&nbsp;CE<br>313 or 323&nbsp;AH
| death_place      = Ray (Iran)
| main_interests   = Medicine, philosophy, [[alchemy]], criticism of religion 
| language         = [[Arabic]] (writings)
| influences       =
| influenced       =
| notable_ideas    = Pioneer of [[obstetrics]] and [[ophthalmology]], author of the first book on [[pediatrics]], making leading contributions in [[inorganic]] and [[organic chemistry]], also the author of several philosophical works
}}

'''Abū Bakr al-Rāzī''', also known as '''Rhazes'''{{efn|His name was [[Latinization (literature)|rendered in Latin]] as either '''Rhazes''' or '''Rhasis'''. In modern academic literature he is also often referred to as '''Razi'''.}} (full name: {{langx|ar|أبو بکر محمد بن زکریاء الرازي|translit=Abū Bakr Muḥammad ibn Zakariyyāʾ al-Rāzī|label=none}}),{{efn|For the spelling of his Arabic name, see for example {{harvnb|Kraus|1939}}. Sometimes it is also spelled {{langx|ar|زکریا|label=none}} ({{transliteration|ar|Zakariyyā}}) rather than {{langx|ar|زکریاء|label=none}} ({{transliteration|ar|Zakariyyāʾ}}), as for example in {{harvnb|Dānish-pazhūh|1964|loc=p. 1 of the edition}}, or in {{harvnb|Mohaghegh|1993|p=5}}. In modern [[Persian language|Persian]] his name is rendered as {{langx|fa|ابوبکر محمدبن زکریا رازی|label=none}} (see {{harvnb|Dānish-pazhūh|1964|loc=p. 1 of the introduction}}), though instead of {{langx|fa|زکریا|label=none}} one may also find {{langx|fa|زکریای|label=none}} (see {{harvnb|Mohaghegh|1993|p=18}}).}} {{circa|864 or 865–925 or 935 CE}},{{efn|For his date of birth, {{harvnb|Kraus|Pines|1913–1936}} give 864 CE / 250 AH ({{harvnb|Goodman|1960–2007}} gives 854 CE / 250 AH, but this is a typo), while {{harvnb|Richter-Bernburg|2003}} and {{harvnb|Adamson|2021a}} give 865 CE / 251 AH. For his date of death as 925 or 935 CE / 313 or 323 AH, see Goodman 1960–2007; some sources only give 925 CE / 313 AH ({{harvnb|Walker|1998}}; Richter-Bernburg 2003; {{harvnb|Adamson|2021a}}).}} was a Persian [[Medicine in the medieval Islamic world|physician]], [[Islamic philosophy|philosopher]] and [[Alchemy and chemistry in medieval Islam|alchemist]] who lived during the [[Islamic Golden Age]]. He is widely regarded as one of the most important figures in the history of medicine,<ref>{{harvnb|Walker|1998}}; {{harvnb|Iskandar|2008}}; {{harvnb|Adamson|2021a}}.</ref> and also wrote on [[logic]], [[astronomy]] and [[grammar]].<ref>Majid Fakhry, ''A History of Islamic  Philosophy'', Columbia University Press (2004), p. 98.</ref> He is also known for his [[criticism of religion]], especially with regard to the concepts of [[Prophets and messengers in Islam|prophethood]] and [[revelation]]. However, the religio-philosophical aspects of his thought, which also included a belief in five "eternal principles", are fragmentary and only reported by authors who were often hostile to him.<ref>{{harvnb|Adamson|2021a}}.</ref>

A comprehensive thinker, al-Razi made fundamental and enduring contributions to various fields, which he recorded in over 200 manuscripts, and is particularly remembered for numerous advances in medicine through his [[observation]]s and discoveries.<ref>Hakeem Abdul Hameed, [http://www.salaam.co.uk/knowledge/hakeems.php Exchanges between India and Central Asia in the Field of Medicine]. {{Webarchive|url=https://web.archive.org/web/20081006200548/http://salaam.co.uk/knowledge/hakeems.php|date=6 October 2008}}.</ref> An early proponent of [[experimental medicine]], he became a successful doctor, and served as chief physician of [[Baghdad]] and [[Rey, Iran|Ray]] hospitals.<ref name="ENW2">{{harvnb|Iskandar|2008}}.</ref><ref>Influence of Islam on World Civilization by Prof. Z. Ahmed, p. 127.</ref> As a teacher of [[medicine]], he attracted students of all backgrounds and interests and was said to be compassionate and devoted to the service of his patients, whether rich or poor.<ref>Rāzī, Abū Bakr Muḥammad ibn Zakarīyā, Fuat Sezgin, Māzin ʻAmāwī, Carl Ehrig-Eggert, and E. Neubauer. ''Muḥammad ibn Zakarīyāʼ ar-Rāzī (d. 313/925): Texts and Studies''. Frankfurt am Main: Institute for the History of Arabic-Islamic Science at the Johann Wolfgang Goethe University, 1999.</ref> Along with [[Thābit ibn Qurra]] (836–901), he was one of the first to clinically distinguish between [[smallpox]] and [[measles]].<ref>{{harvnb|Sezgin|1970|p=276}}.</ref>

Through translation, his medical works and ideas became known among medieval European practitioners and profoundly influenced medical education in the Latin West.<ref name="ENW2" /> Some volumes of his work ''Al-Mansuri'', namely "On Surgery" and "A General Book on Therapy", became part of the medical curriculum in Western universities.<ref name="ENW2" /> [[Edward Granville Browne]] considers him as "probably the greatest and most original of all the Muslim physicians, and one of the most prolific as an author".<ref>{{harvnb|Browne|1921|p=44}}.</ref> Additionally, he has been described as the father of [[pediatrics]],<ref name="Tschanz2">{{cite journal|author=Tschanz David W., PhD|year=2003|title=Arab(?) Roots of European Medicine|journal=Heart Views|volume=4|issue=2}}</ref><ref name="Elgood2">{{cite book|title=A Medical History of Persia and The Eastern Caliphate|last1=Elgood|first1=Cyril|date=2010|publisher=Cambridge|isbn=978-1-108-01588-2|edition=1st|location=London|pages=202–203|quote=By writing a monograph on 'Diseases in Children' he may also be looked upon as the father of pediatrics.}}</ref> and a pioneer of [[obstetrics]] and [[ophthalmology]].<ref>{{Cite web|url=http://www.unhas.ac.id/rhiza/arsip/saintis/razi.html|title=Ar-Razi (Rhazes), 864–930 C.E.|website=www.unhas.ac.id|access-date=2020-02-27|quote=Ar-Razi was a pioneer in many areas of medicine and treatment and the health sciences in general. In particular, he was a pioneer in the fields of pediatrics, obstetrics and ophthalmology.|archive-date=20 February 2020|archive-url=https://web.archive.org/web/20200220144536/http://www.unhas.ac.id/rhiza/arsip/saintis/razi.html|url-status=dead}}</ref>

==Biography==
[[File:Al-RaziInGerardusCremonensis1250.JPG|thumb|upright=1.4|left|Depiction of al-Razi in a 13th-century manuscript of a work by [[Gerard of Cremona]]]]
Al-Razi was born in the city of [[Rey, Iran|Ray]] (modern Rey, also the origin of his [[nisba (onomastics)|name]] "al-Razi"),<ref name="auto">{{harvnb|Adamson|2021a}}.</ref> into a family of Persian stock and was a native speaker of [[Persian language]].<ref>{{harvnb|Kahl|2015|page=6}}<br/>{{nowrap|{{harvnb|Ruska|1937|page=4}}}}<br/>{{harvnb|Ullmann|1997|page=29}}<br />{{harvnb|Sarton|1927|page=590}}<br/>{{harvnb|Hitti|1969|page=188}}<br/>{{harvnb|Walzer|1962|page=18}}</ref> Ray was situated on the [[Silk Road|Great Silk Road]] that for centuries facilitated trade and cultural exchanges between East and West. It is located on the southern slopes of the [[Alborz]] mountain range situated near [[Tehran]], Iran.

In his youth, al-Razi moved to [[Baghdad]] where he studied and practiced at the local [[bimaristan]] (hospital). Later, he was invited back to Rey by [[Mansur ibn Ishaq]], then the governor of Ray, and became a bimaristan's head.<ref name="ENW2" /> He dedicated two books on medicine to Mansur ibn Ishaq, ''The Spiritual Physic'' and ''Al-Mansūrī on Medicine''.<ref name="ENW2" /><ref>{{Cite web
| last = Rāzī
| first = Abū Bakr Muḥammad ibn Zakarīyā
| title = The Book of Medicine Dedicated to Mansur and Other Medical Tracts – Liber ad Almansorem
| work = World Digital Library
| language = la
| access-date = 2 March 2014
| url = http://www.wdl.org/en/item/7381/
}}</ref><ref name = "bookonmedicinededicatedtoalmansur">{{Cite web
| last = Rāzī
| first = Abū Bakr Muḥammad ibn Zakarīyā
| title = The Book on Medicine Dedicated to al-Mansur – الكتاب المنصوري في الطب
| work = World Digital Library
| language = am, ar
| access-date = 2 March 2014
| url = http://www.wdl.org/en/item/4276/
}}</ref><ref>{{Cite web
| title = Commentary on the Chapter Nine of the Book of Medicine Dedicated to Mansur – Commentaria in nonum librum Rasis ad regem Almansorem
| work = World Digital Library
| language = la
| access-date = 2 March 2014
| year = 1542
| url = http://www.wdl.org/en/item/10672/
}}</ref> Because of his newly acquired popularity as physician, al-Razi was invited to Baghdad where he assumed the responsibilities of a director in a new hospital named after its founder [[al-Muʿtaḍid]] (d. 902 CE).<ref name="ENW2" /> Under the reign of Al-Mutadid's son, [[Al-Muktafi]] (r. 902–908) al-Razi was commissioned to build a new hospital, which should be the largest of the [[Abbasid Caliphate]]. To pick the future hospital's location, al-Razi adopted what is nowadays known as an [[evidence-based]] approach suggesting having fresh meat hung in various places throughout the city and to build the hospital where meat took longest to rot.<ref>{{cite journal | pmc= 3644752 | pmid=23661862 | doi=10.4103/0257-7941.107357 | volume=31 | issue=4 | title=Rhazes' concepts and manuscripts on nutrition in treatment and health care |vauthors=Nikaein F, Zargaran A, Mehdizadeh A | journal=Anc Sci Life | pages=160–3| year=2012 | doi-access=free }}</ref>

He spent the last years of his life in his native Rey suffering from [[glaucoma]]. His eye affliction started with cataracts and ended in total blindness.<ref>Magner, Lois N. ''A History of Medicine''. New York: M. Dekker, 1992, p. 140.</ref> The cause of his blindness is uncertain. One account mentioned by [[Ibn Juljul]] attributed the cause to a blow to his head by his patron, [[Mansur ibn Ishaq]], for failing to provide proof for his alchemy theories;<ref>{{Cite book| publisher = CRC Press| isbn = 978-0-8247-4360-4| last = Magner| first = Lois N.| title = A History of the Life Sciences, Revised and Expanded| date = 13 August 2002|page=60}}</ref> while [[Bar Hebraeus|Abulfaraj]] and [[Miguel Casiri|Casiri]] claimed that the cause was a diet of beans only.<ref>Pococke, E. ''Historia Compendosia Dynastiarum''. Oxford, 1663, p. 291.</ref><ref>{{cite book|last=Long|first=George|title=The Penny cyclopædia of the Society for the Diffusion of Useful Knowledge, Volume 19|year=1841|publisher=C. Knight|page=[https://archive.org/details/pennycyclopdias23longgoog/page/n453 445]|url=https://archive.org/details/pennycyclopdias23longgoog|quote=rhazes.}}</ref> Allegedly, he was approached by a physician offering an ointment to cure his blindness. Al-Razi then asked him how many layers does the [[Human eye|eye]] contain and when he was unable to receive an answer, he declined the treatment stating "my eyes will not be treated by one who does not know the basics of its anatomy".<ref>{{cite web |url=http://ddc.aub.edu.lb/projects/saab/S16R27/html-640/003-002.html |title=Saab Medical Library – كتاب في الجدري و الحصبة – American University of Beirut |publisher=Ddc.aub.edu.lb |date=1 June 2003 |access-date=15 October 2012 |archive-url=https://web.archive.org/web/20120425001329/http://ddc.aub.edu.lb/projects/saab/S16R27/html-640/003-002.html |archive-date=25 April 2012 |url-status=dead }}</ref>

The lectures of al-Razi attracted many students. As [[Ibn al-Nadim]] relates in ''[[Ibn al-Nadim#Al-Fihrist|Fihrist]]'', al-Razi was considered a ''[[Sheikh|shaikh]]'', an honorary title given to one entitled to teach and surrounded by several circles of students. When someone raised a question, it was passed on to students of the 'first circle'; if they did not know the answer, it was passed on to those of the 'second circle', and so on. When all students would fail to answer, al-Razi himself would consider the query. Al-Razi was a generous person by nature, with a considerate attitude towards his patients. He was charitable to the poor, treated them without payment in any form, and wrote for them a treatise ''Man La Yaḥḍuruhu al-Ṭabīb'', or ''Who Has No Physician to Attend Him'', with medical advice.<ref>Porter, Roy. ''The Greatest Benefit to Mankind: A Medical History of Humanity''. New York: W. W. Norton, 1997, p. 97.</ref> One former pupil from [[Tabaristan]] came to look after him, but as [[Abū Rayḥān al-Bīrūnī|al-Biruni]] wrote, al-Razi rewarded him for his intentions and sent him back home, proclaiming that his final days were approaching.<ref name="Brilliant Biruni">Kamiar, Mohammad. ''Brilliant Biruni: A Life Story of Abu Rayhan Mohammad Ibn Ahmad''. Lanham, Md: Scarecrow Press, 2009.</ref> According to Biruni, al-Razi died in Rey in 925 sixty years of age.<ref name="Al-Birūni">Ruska, Julius. ''Al-Birūni als Quelle für das Leben und die Schriften al-Rāzi's''. Bruxelles: Weissenbruch, 1922.</ref> Biruni, who considered al-Razi his mentor, among the first penned a short biography of al-Razi including a bibliography of his numerous works.<ref name="Al-Birūni" />

Ibn al-Nadim recorded an account by al-Razi of a [[China|Chinese]] student who copied down all of [[Galen]]'s works in [[Chinese language|Chinese]] as al-Razi read them to him out loud after the student learned fluent Arabic in 5 months and attended al-Razi's lectures.<ref name="NeedhamWang1954">{{cite book|author1=Joseph Needham|author2=Ling Wang|title=中國科學技術史|url=https://books.google.com/books?id=lNXZGQVdz_gC&pg=PA219|year=1954|publisher=Cambridge University Press|isbn=978-0-521-05799-8|pages=219–}}</ref><ref name="Gernet1996">{{cite book|author=Jacques Gernet|title=A History of Chinese Civilization|url=https://archive.org/details/historyofchinese00gern|url-access=registration|date=31 May 1996|publisher=Cambridge University Press|isbn=978-0-521-49781-7|pages=[https://archive.org/details/historyofchinese00gern/page/34 34]–}}</ref><ref>{{cite web|url=http://www.physique48.org/serv/razi.htm|title=الرازي|first=فيزياء|last=غليزان|access-date=24 December 2015|archive-url=https://web.archive.org/web/20160303224956/http://www.physique48.org/serv/razi.htm|archive-date=3 March 2016|url-status=dead}}</ref><ref>{{cite web|url=http://www.nooonbooks.com/media/downloadable/files/links/2/5/pages/25058/OPS/Text/chapter-012.xml|title=قلم لنكبرده ولساكسه , قلم الصين|access-date=2 November 2016|archive-url=https://web.archive.org/web/20160304223624/http://www.nooonbooks.com/media/downloadable/files/links/2/5/pages/25058/OPS/Text/chapter-012.xml|archive-date=4 March 2016|url-status=dead}}</ref>

After his death, his fame spread beyond the Middle East to Medieval Europe, and lived on. In an undated catalog of the library at [[Peterborough Cathedral|Peterborough Abbey]], most likely from the 14th century, al-Razi is listed as a part author of ten books on medicine.<ref>Gunton, Simon. The History of the Church of Peterborough. London, Richard Chiswell, publisher, 1686. Facsimile edition published by Clay, Tyas, and Watkins in Peterborough and Stamford (1990). Item Fv. on pp. 187–8.</ref>

==Contributions to medicine==
[[File:Rhazes, a physician, examines a boy Wellcome V0015933.jpg|thumb|upright=1.5|al-Razi examining a patient (miniature painting by [[Hossein Behzad]], 1894–1968)]]
{{More citations needed section| date= May 2012}}

===Psychology and psychotherapy===
Al-Razi was one of the world's first great medical experts. He is considered the father of psychology and psychotherapy.<ref name="Claude Philips">{{Cite book|url=https://books.google.com/books?id=jAO0CgAAQBAJ&q=al+razi+father+of+ophthalmology&pg=PA111|title=No Wonder You Wonder!: Great Inventions and Scientific Mysteries|last=Phipps|first=Claude|date=2015-10-05|publisher=Springer|isbn=9783319216805|language=en|page=111}}</ref>

===Smallpox vs. measles===
<!-- Commented out: [[File:Al-Razi Treatise Smallpox prevention.jpg|thumb|left|Al-Razi's treatise on Smallpox prevention.]] -->
Al-Razi's book {{Transliteration|ar|al-Judari wa l-ḥaṣba}} "On Smallpox and Measles", is, along with a book of the same name by [[Thabit ibn Qurra]] (836–901), among the earliest extant books describing [[smallpox]] and [[measles]] as distinct diseases.<ref>{{cite book| last1=Sezgin |first1=Fuat| author1link=Fuat Sezgin| title=Ar-Razi. In: Geschichte des arabischen Schrifttums Bd. III: Medizin – Pharmazie – Zoologie – Tierheilkunde = History of the Arabic literature Vol. III: Medicine – Pharmacology – Veterinary Medicine| date=1970| publisher=E. J. Brill| location=Leiden}} p. 276; on Thabit's work cf. pp. 260–261 (no. 3).</ref> Smallpox was not known in [[ancient Greek medicine]]. It was likely differentiated from measles and other similar diseases by authors in [[late antiquity]] writing in [[Medieval Greek]] and [[Syriac language|Syriac]], whose works were known to Thabit and al-Razi.<ref>{{harvnb|Sezgin|1970|p=260}}, referring to {{cite journal|last1=Meyerhof|first1=Max|date=1930|title=The 'Book of Treasure', an Early Arabic Treatise on Medicine|journal=Isis|volume=14|issue=1|pages=55–76|doi=10.1086/346485 |jstor=224380}} p. 72.</ref>

Al-Razi's work was translated into Syriac and then into Greek. It became known in Europe through this translation, as well as Latin translations based on the Greek text, and was later translated into several European languages.<ref name="A Dictionary of Greek and Roman biography and mythology, Rhazes">[https://www.perseus.tufts.edu/hopper/text?doc=Perseus%3Atext%3A1999.04.0104%3Aalphabetic+letter%3DR%3Aentry+group%3D2%3Aentry%3Drhazes-bio-1 A Dictionary of Greek and Roman biography and mythology, Rhazes]</ref> Neither the date nor the author of the Syriac and Greek versions is known; but the Greek was created at the request of one of the [[Byzantine emperors]].<ref name="A Dictionary of Greek and Roman biography and mythology, Rhazes"/>

=== Meningitis ===
Al-Razi compared the outcome of patients with [[meningitis]] treated with [[blood-letting]] with the outcome of those treated without it to see if blood-letting could help.<ref>{{Cite book|url=https://www.ncbi.nlm.nih.gov/books/NBK66204/|title=Testing Treatments: Better Research for Better Healthcare|last1=Evans|first1=Imogen|last2=Thornton|first2=Hazel|last3=Chalmers|first3=Iain|last4=Glasziou|first4=Paul|date=1 January 2011|publisher=Pinter & Martin|isbn=9781905177486|edition=2nd|location=London|pmid=22171402}}</ref>

===Pharmacy===
Al-Razi contributed in many ways to the early practice of [[pharmacy]]<ref>{{Cite web | url=http://www.islamicmedicine.org/alrazi3.htm | title=The valuable contributions of Al-Razi (Rhazes) in the history of pharmacy during the middle ages | access-date=16 June 2017 | archive-url=https://web.archive.org/web/20171204104627/http://www.islamicmedicine.org/alrazi3.htm | archive-date=4 December 2017 | url-status=dead }}</ref> by compiling texts, in which he introduces the use of "[[mercury (element)|mercurial]] ointments" and his development of apparatus such as mortars, flasks, spatulas and phials, which were used in pharmacies until the early twentieth century.{{citation needed|date=September 2021}}

===Ethics of medicine===
On a professional level, al-Razi introduced many practical, progressive, medical and psychological ideas. He attacked [[charlatan]]s and fake doctors who roamed the cities and countryside selling their [[Patent medicine|nostrums]] and "cures". At the same time, he warned that even highly educated doctors did not have the answers to all medical problems and could not cure all sicknesses or heal every disease, which was humanly speaking impossible. To become more useful in their services and truer to their calling, al-Razi advised practitioners to keep up with advanced knowledge by continually studying medical books and exposing themselves to new information. He made a distinction between curable and incurable diseases. Pertaining to the latter, he commented that in the case of advanced cases of cancer and [[leprosy]] the physician should not be blamed when he could not cure them. To add a humorous note, al-Razi felt great pity for physicians who took care for the well being of princes, nobility, and women, because they did not obey the doctor's orders to restrict their diet or get medical treatment, thus making it most difficult being their physician.

He also wrote the following on [[medical ethics]]:
{{blockquote|sign=|source=|The doctor's aim is to do good, even to our enemies, so much more to our friends, and my profession forbids us to do harm to our kindred, as it is instituted for the benefit and welfare of the human race, and God imposed on physicians the oath not to compose mortiferous remedies.<ref>[http://www.muslimheritage.com/topics/default.cfm?ArticleID=570 Islamic Science, the Scholar and Ethics] {{Webarchive|url=https://web.archive.org/web/20070922222605/http://muslimheritage.com/topics/default.cfm?ArticleID=570 |date=22 September 2007 }}, Foundation for Science Technology and Civilisation.</ref>}}

[[File:Al-Razi book illumination, Torino D.I.14.jpg|thumb|upright=1.5|Doctor performing [[uroscopy]] (from a Latin translation of a work by al-Razi, 1466)]]

===Books and articles on medicine===
====''[[Al-Hawi]]''====
{{langx|ar|الحاوي|al-Hāwi|The Comprehensive [Book on Medicine]}}
This 23-volume medical textbook sets the foundation of [[gynecology]], [[obstetrics]], [[oncology]] and [[chemotherapy]], and [[ophthalmic surgery]].<ref name="Claude Philips" /> It also contains considerations and criticism on [[Aristotle]] and [[Plato]] and expresses innovative views on many subjects.<ref>{{Cite web
| last = Rāzī
| first = Abū Bakr Muḥammad ibn Zakarīyā
| title = The Comprehensive Book on Medicine – كتاب الحاوى فى الطب
| work = World Digital Library
| access-date = 2 March 2014
| url = http://www.wdl.org/en/item/7458
}}</ref><ref>{{Cite web
| title = The Comprehensive Book on Medicine – كتاب الحاوي
| work = World Digital Library
| language = ar
| access-date = 2 March 2014
| orig-year = Around 1674 CE
| url = http://www.wdl.org/en/item/9715
| year = 1674
}}</ref><ref>{{Cite web
| last = Rāzī
| first = Abū Bakr Muḥammad ibn Zakarīyā
| title = The Comprehensive Book on Medicine—Continens Rasis
| work = World Digital Library
| language = la
| access-date = 2 March 2014
| year = 1529
| url = http://www.wdl.org/en/item/9553
}}</ref> Because of this book alone, many scholars consider al-Razi the greatest medical doctor of the [[Middle Ages]].

''Al-Hawi'' is not a formal medical encyclopedia but a posthumous compilation of al-Razi's working notebooks, which included knowledge gathered from other books as well as original observations on diseases and therapies based on his own clinical experience. It is significant since it contains a monograph on smallpox, one of the earliest known. It was translated into Latin in 1279 by [[Faraj ben Salim]], a physician of Sicilian-Jewish origin employed by [[Charles I of Anjou|Charles of Anjou]], and after which it had a considerable influence in Europe.

''Al-Hawi'' also criticized the views of [[Galen]] after al-Razi had observed many clinical cases that did not follow Galen's descriptions of fevers. For example, he stated that Galen's descriptions of [[urinary]] [[ailment]]s were inaccurate as he had only seen three cases, while al-Razi had studied hundreds of such cases in [[Bimaristan|hospitals]] of [[Baghdad]] and Rey.<ref>[[Emilie Savage-Smith]] (1996), "Medicine", in Roshdi Rashed, ed., ''[[Encyclopedia of the History of Arabic Science]]'', Vol. 3, pp. 903–962 [917]. [[Routledge]], London and New York.</ref>

====''For One Who Has No Physician to Attend Him'' (''Man la Yahduruhu Al-Tabib'') (''من لا يحضره الطبيب'')====

Al-Razi was possibly the first Persian doctor to deliberately write a home medical manual ([[Home remedy|remedial]]) directed at the general public. He dedicated it to the poor, the traveller, and the ordinary citizen who could consult it to treat common ailments when a doctor was unavailable. This book is of special interest to the history of pharmacy since similar books were very popular until the 20th century. Al-Razi described in its 36 chapters diets and drug components that can be found in either an apothecary, a marketplace, in well-equipped kitchens, or military camps. Thus, every intelligent person could follow its instructions and prepare the proper recipes with good results.

Some of the illnesses treated were headaches, colds, coughing, melancholy and diseases of the eye, ear, and stomach. For example, he prescribed for a feverish headache: "2 parts of ''duhn'' (oily extract) of [[rose]], to be mixed with 1 part of vinegar, in which a piece of [[linen]] cloth is dipped and compressed on the forehead". He recommended as a [[laxative]], "7 [[Dram (unit)|drams]] of dried [[violet (plant)|violet]] flowers with 20 pears, [[Maceration (food)|macerated]] and well mixed, then strained. Add to this [[filtrate]] 20 drams of sugar for a drink." In cases of melancholy, he invariably recommended prescriptions, which included either [[poppy|poppies]] or its juice ([[opium]]), ''[[Cuscuta epithymum]]'' (clover dodder) or both. For an eye-remedy, he advised [[myrrh]], [[saffron]], and [[frankincense]], 2 drams each, to be mixed with 1 dram of [[yellow arsenic]] formed into [[Tablet (pharmacy)|tablets]]. Each tablet was to be dissolved in sufficient [[coriander]] water and used as eye drops.

[[File:Colofón-Libro de Medicina de Razi.jpg|thumb|upright=1.5|Colophon of al-Razi's ''Book of Medicine for Mansur'']]<!-- Commented out but usefull image: [[File:Petrus Rusticus, Memoriale medicorum Wellcome L0023854.jpg|thumb|upright=1|Woodcut depicting al-Razi and [[Avicenna]] (by Pietro Antonio Rustico, fl. 1486–1522)]]-->
;''Book for al-Mansur ({{lang|ar|Kitāb al-Manṣūrī}})''
Al-Razi dedicated this work to his patron [[Abu Salih Mansur|Abū Ṣāliḥ al-Manṣūr]], the [[Samanid]] governor of Ray.<ref>{{harvnb|Adamson|2021b|p=17}}.</ref> It was translated into Latin by [[Gerard of Cremona]] around 1180.<ref>{{cite web |title=Rāzī, Liber Almansoris (Cambridge, University Library, MS Add. 9213) |url=https://cudl.lib.cam.ac.uk/view/MS-ADD-09213/1 |website=Cambridge Digital Library |access-date=22 November 2023}}</ref> A Latin translation of it was edited in the 16th century by the Dutch anatomist and physician [[Andreas Vesalius]].<ref name="auto"/>

====''Doubts about Galen'' ({{transliteration|ar|al-Shukūk ʿalā Jalīnūs}})====

In his book ''Doubts about Galen'',<ref>Edited and translated into French by {{harvnb|Koetschet|2019}}. An older edition is {{harvnb|Mohaghegh|1993}}.</ref> al-Razi rejects several claims made by the Greek physician, as far as the alleged superiority of the [[Greek language]] and many of his [[cosmology|cosmological]] and medical views. He links medicine with philosophy, and states that sound practice demands independent thinking. He reports that Galen's descriptions do not agree with his own clinical observations regarding the run of a fever. And in some cases he finds that his clinical experience exceeds Galen's.

He criticized Galen's theory that the body possessed four separate "[[Humorism|humors]]" whose balance is the key to health and a natural body temperature. A sure way to upset such a system was to insert a liquid with a different temperature into the body, resulting in an increase or decrease of bodily heat, which resembled the temperature of that particular fluid. Al-Razi noted that a warm drink would heat the body much higher than its natural temperature. Thus, the drink would trigger a response from the body rather than transferring only its warmth or coldness to it. (''Cf.'' I. E. Goodman)

This line of criticism could completely refute Galen's theory of humors and Aristotle's theory of the [[classical elements]] on which it was grounded. Al-Razi's alchemical experiments suggested other qualities of matter, such as "oiliness" and "sulphurousness", or [[inflammability]] and [[salinity]], which were not readily explained by the traditional fire, water, earth, and air division of elements.

Al-Razi's challenge to the current fundamentals of medical theory was quite controversial. Many accused him of ignorance and arrogance, even though he repeatedly expressed his praise and gratitude to Galen for his contributions and labours, saying:

{{blockquote|I prayed to God to direct and lead me to the truth in writing this book. It grieves me to oppose and criticize the man [[Galen]] from whose sea of knowledge I have drawn much. Indeed, he is the Master and I am the disciple. Although this reverence and appreciation will and should not prevent me from doubting, as I did, what is erroneous in his theories. I imagine and feel deeply in my heart that Galen has chosen me to undertake this task, and if he were alive, he would have congratulated me on what I am doing. I say this because Galen's aim was to seek and find the truth and bring light out of darkness. I wish indeed he were alive to read what I have published.<ref>Bashar Saad, Omar Said, ''Greco-Arab and Islamic Herbal Medicine: Traditional System, Ethics, Safety, Efficacy, and Regulatory Issues'', John Wiley & Sons, 2011. {{ISBN|9781118002261}}, [https://books.google.com/books?id=-WQVF8nhKf4C&pg=PT33 page]</ref>}}

====''The Diseases of Children''====
Al-Razi's ''The Diseases of Children'' was the first monograph to deal with [[pediatrics]] as an independent field of medicine.<ref name="Tschanz2"/><ref name="Elgood2"/>

==Alchemy<!-- [[Sirr al-asrar (al-Razi)]] redirects here; please edit the redirect (via 'what links here') when changing the name of the section heading or the place where Sirr al-asrar is discussed -->==
[[File:Rhazes, Arab physician and alchemist, in hi Wellcome V0018133.jpg|thumb|upright=1.5|al-Razi in his laboratory ([[Orientalism|orientalist]] painting by Ernest Board, {{Circa|1912}})]]
{{more citations needed section|date=September 2021}}
{{See also|Sulfuric acid#History}}

===The transmutation of metals===
Al-Razi's interest in alchemy and his strong belief in the possibility of [[Alchemy|transmutation]] of lesser metals to silver and gold was attested half a century after his death by [[Ibn an-Nadim]]'s book, ''The Philosopher's Stone'' (''Lapis Philosophorum'' in Latin). Nadim attributed a series of twelve books to al-Razi, plus an additional seven, including his refutation to [[al-Kindi]]'s denial of the validity of alchemy. Al-Kindi (801–873 CE) had been appointed by the Abbasid Caliph Ma'mun founder of Baghdad, to 'the [[House of Wisdom]]' in that city, he was a philosopher and an opponent of alchemy. Al-Razi's two best-known alchemical texts, which largely superseded his earlier ones: ''al-Asrar'' (الاسرار "The Secrets"), and ''Sirr al-Asrar'' (سر الاسرار "The Secret of Secrets"), which incorporates much of the previous work.

Apparently al-Razi's contemporaries believed that he had obtained the secret of turning iron and copper into gold. Biographer Khosro Moetazed reports in ''Mohammad Zakaria Razi'' that a certain General Simjur confronted al-Razi in public, and asked whether that was the underlying reason for his willingness to treat patients without a fee. "It appeared to those present that al-Razi was reluctant to answer; he looked sideways at the general and replied":<blockquote>I understand alchemy and I have been working on the characteristic properties of metals for an extended time. However, it still has not turned out to be evident to me, how one can transmute gold from copper. Despite the research from the ancient scientists done over the past centuries, there has been no answer. I very much doubt if it is possible...</blockquote>

===Major works on alchemy===
{{unreferenced section|date=November 2021}}
Al-Razi's works present the first systematic classification of carefully observed and verified facts regarding chemical substances, reactions and apparatus, described in a language almost entirely free from mysticism and ambiguity.

==== ''The Secrets'' ({{transliteration|ar|Al-Asrar}}) ====

''<nowiki/>'The Secrets'<nowiki/>'' (''al-Asrar'', ''Kitāb al-Asrār'', ''<nowiki/>'Book of Secrets''') was written in response to a request from al-Razi's close friend, colleague, and former student, Abu Muhammad ibn Yunis [[Bukhara|al-Bukhari]], a Muslim mathematician, philosopher, and [[natural science|natural scientist]].

==== ''Secret of Secrets'' ({{transliteration|ar|Sirr al-Asrar}}) ====
{{About|the book by Abu Bakr al-Razi|the Pseudo-Aristotelian treatise with the same name|Secretum Secretorum{{!}}''Secretum Secretorum''|section=yes}}
This is al-Razi's most famous book. Here he gives systematic attention to basic chemical operations important to the history of pharmacy. In this book al-Razi divides the subject of "[[matter]]' into three categories, as in his previous book {{transliteration|ar|Al-Asrar}}.
# Knowledge and identification of the medical components within substances derived from plants, animals, and minerals, and descriptions of the best types for medical treatments.
# Knowledge of equipment and tools of interest to and used by either alchemists or [[apothecaries]].
# Knowledge of seven [[alchemy|alchemical]] procedures and techniques: sublimation and condensation of [[mercury (element)|mercury]], precipitation of sulfur, and arsenic calcination of [[minerals]] (gold, silver, copper, lead, and iron), salts, glass, [[talc]], [[Exoskeleton|shells]], and [[wax]]ing.

: This last category contains additional descriptions of other methods and applications used in [[Chemical synthesis|transmutation]]:
:* The added mixture and use of solvent vehicles.
:* The amount of heat (fire) used, 'bodies and stones', ({{transliteration|ar|al-ajsad}} and {{transliteration|ar|al-ahjar}}) that can or cannot be transmuted into corporal substances such of metals and salts ({{transliteration|ar|al-amlah}}).
:* The use of a liquid [[mordant]] which quickly and permanently colors lesser metals for more lucrative sale and profit.

Similar to the commentary on the 8th century text on [[Amalgam (chemistry)|amalgam]]s ascribed to [[Jabir ibn Hayyan]], al-Razi gives methods and procedures of coloring a silver object to imitate gold ([[gold leafing]]) and the reverse technique of removing its color back to silver. [[Gilding]] and [[silvering]] of other metals ([[alum]], calcium salts, iron, copper, and [[tutty]]) are also described, as well as how colors will last for years without tarnishing or changing.

Al-Razi classified minerals into six divisions:
# Four spirits ({{transliteration|ar|al-arwah}}): [[Mercury (element)|mercury]], [[sal ammoniac]], [[sulfur|sulphur]], and arsenic sulphide ([[orpiment]] and [[realgar]]).
# [[Metals of antiquity|Seven bodies]] ({{transliteration|ar|al-ajsad}}): silver, gold, copper, iron, black lead ({{transliteration|ar|plumbago}}), [[zinc]] ({{transliteration|ar|kharsind}}), and [[tin]].
# Thirteen [[Gemstone|stones]] ({{transliteration|ar|al-ahjar}}): [[Marcasite]] ({{transliteration|ar|marqashita}}), [[Periclase|magnesia]], [[malachite]], [[tutty]] ({{transliteration|ar|tutiya}}, zinc oxide), [[talcum]], [[lapis lazuli]], [[gypsum]], [[azurite]], [[haematite]] (iron oxide), arsenic oxide{{which|date=November 2021}}, [[mica]], [[asbestos]], and glass (then identified as made of sand and alkali of which the transparent crystal damascene is considered the best).
# Seven [[vitriol]]s ({{transliteration|ar|al-zajat}}): [[alum]] ({{transliteration|ar|al-shabb}} {{lang|ar|الشب}}), and white ({{transliteration|ar|qalqadis}} {{lang|ar|القلقديس}}), black, red ({{transliteration|ar|suri}} {{lang|ar|السوري}}), and yellow ({{transliteration|ar|qulqutar}} {{lang|ar|القلقطار}}) vitriols (the impure sulfates of iron, copper, etc.), green ({{transliteration|ar|qalqand}} {{lang|ar|القلقند}}).
# Seven [[borate]]s: [[natron]], and impure sodium borate.
# Eleven salts ({{transliteration|ar|al-amlah}}): including brine, [[Sodium chloride|common salt]], [[ash]]es, [[naphtha]], live [[calcium oxide|lime]], and [[urine]], [[Sodium chloride|rock]], and [[sea salt]]s. Then he separately defines and describes each of these substances, the best forms and colours of each, and the qualities of various adulterations.

Al-Razi gives also a list of apparatus used in alchemy. This consists of 2 classes:
# Instruments used for the dissolving and melting of metals such as the blacksmith's hearth, bellows, crucible, thongs (tongue or ladle), {{linktext|macerator}}, stirring rod, cutter, grinder (pestle), file, shears, {{linktext|descensory}}, and semi-cylindrical iron mould.
# Utensils used to carry out the process of transmutation and various parts of the distilling apparatus: the retort, [[alembic]], shallow iron pan, potters kiln and blowers, large oven, cylindrical stove, glass cups, flasks, [[phial]]s, beakers, glass funnel, crucible, [[aludel]], heating lamps, mortar, cauldron, hair-cloth, sand- and water-bath, sieve, flat stone mortar and chafing-dish.

==Philosophy==
Although al-Razi wrote extensively on philosophy, most of his works on this subject are now lost.<ref>See the list of 35 works given by {{harvnb|Daiber|2017|pp=389–396}}. Of these, only three are extant in full (see p. 396), though fragments of many other works also survive (edited by {{harvnb|Kraus|1939}}).</ref> Most of his religio-philosophical ideas, including his belief in five "eternal principles", are only known from fragments and testimonies found in other authors, who were often strongly opposed to his thought.<ref>{{Citation |last=Adamson |first=Peter |title=Abu Bakr al-Razi |date=2021 |url=https://plato.stanford.edu/archives/sum2021/entries/abu-bakr-al-razi/ |encyclopedia=The Stanford Encyclopedia of Philosophy |editor-last=Zalta |editor-first=Edward N. |access-date=2023-12-21 |edition=Summer 2021 |publisher=Metaphysics Research Lab, Stanford University|quote=While we have ample surviving evidence for his medical thought, his philosophical ideas mostly have to be pieced together on the basis of reports found in other authors, who are often hostile to him.}}</ref>

===Metaphysics===
Al-Razi's metaphysical doctrine derives from the theory of the "five eternals", according to which the world is produced out of an interaction between God and four other eternal principles ([[soul]], [[matter]], time, and [[place (mathematics)|place]]).<ref name="oxford">{{Cite book| publisher = Oxford University Press| isbn = 9780195379488| last = Marenbon| first = John| title = The Oxford Handbook of Medieval Philosophy| date = 14 June 2012|pages=69–70}}</ref> He accepted a pre-socratic type of [[atomism]] of the bodies, and for that he differed from both the [[falasifa]] and the [[mutakallimun]].<ref name="oxford" /> While he was influenced by [[Plato]] and the medical writers, mainly [[Galen]], he rejected [[taqlid]] and thus expressed criticism about some of their views. This is evident from the title of one of his works, ''Doubts About Galen''.<ref name="oxford" />
{{clear}}

==Views on religion==
A number of contradictory works and statements about religion have been ascribed to al-Razi. Many sources claim that al-Razi viewed prophecy and revealed religion as unnecessary and delusional, claiming that all humans have the ability to access and discover truth (including the existence of God) through God-given reason.<ref>{{cite book |last1=Goodman |first1=Lenn |editor1-last=Audi |editor1-first=Robert |title=The Cambridge Dictionary of Philosophy |date=1995 |publisher=The Cambridge University Press |location=Cambridge |isbn=0-521-40224-7 |pages=20–21 |quote=In keeping with the Epicureanism he might have imbibed from Galenic sources, he rejects special prophecy as imposture, arguing that reason, God's gift to all alike, is sufficient guidance.}}</ref><ref>{{cite book |last1=Groff |first1=Peter |title=Islamic Philosophy A-Z |date=2007 |publisher=Edinburgh University Press |location=Edinburgh |isbn=9780748620890 |pages=180–181 |quote=Accordingly, al-Razi takes a rather dim view of prophecy, which in his view is both unnecessary and delusional, and indeed he criticizes all revealed religions as provincial and divisive.  No one individual or group can legitimately claim a monopoly on the truth; each succeeding generation has the ability to improve upon and even transcend its predecessor's insights through rational argumentation and empirical inquiry.}}</ref><ref name="auto2">{{cite book |last1=Walker |first1=Paul E. |title=Concise Routledge Encyclopedia of Philosophy |date=2000 |publisher=Routledge |location=New York |isbn=0-415-22364-4 |page=744 |quote=Chief among his positive contributions is his advocacy of a doctrine of equal aptitude in all humans, which grants no special role for unique and divinely favoured prophets and which recognizes the possibility of future progress in the advancement of knowledge.}}</ref><ref name="auto1">{{harvnb|Goodman|1960–2007}}.</ref> According to these sources, his skepticism of prophecy and view that no one group or religion has privileged access to the truth is driven by his view that all people have an equal basic capacity for rationality and discovery of truth, and that apparent differences in this capacity are simply a feature of interest, opportunity, and effort.<ref>{{cite book |last1=Groff |first1=Peter |title=Islamic Philosophy A-Z |date=2007 |publisher=Edinburgh University Press |location=Edinburgh |isbn=9780748620890 |pages=180–181 |quote=Elsewhere, he argues that all human beings have the same fundamental capacity for reason and that the apparent inequality of people in this respect is ultimately a function of opportunity, interest and effort.  Accordingly, al-Razi takes a rather dim view of prophecy, which in his view is both unnecessary and delusional, and indeed he criticizes all revealed religions as provincial and divisive.  No one individual or group can legitimately claim a monopoly on the truth; each succeeding generation has the ability to improve upon and even transcend its predecessor's insights through rational argumentation and empirical inquiry.}}</ref><ref name="auto2" /> Because of his supposed rejection of prophecy and acceptance of reason as the primary method for accessing the truth, al-Razi came to be admired as a [[freethought|freethinker]] by some.<ref>{{cite book |last1=Groff |first1=Peter |title=Islamic Philosophy A-Z |date=2007 |publisher=Edinburgh University Press Ltd. |location=Edinburgh |isbn=9780748620890 |page=41 |quote=More specifically, freethinking might be defined as independent thinking within an Islamicate context which (1) relies upon natural reason alone as a means to reach the truth, and (2) rejects the authority and veracity of revelation, prophecy and tradition... See belief; Ibn al-Rawandi; Islam; prophecy; rationalism; al-Razi (Abu Bakr)}}</ref><ref name="auto1" />

According to al-Biruni's ''Bibliography of al-Razi'' (''Risāla fī Fihrist Kutub al-Rāzī''), al-Razi wrote two "heretical books": "''Fī al-Nubuwwāt'' (''On Prophecies'') and "''Fī Ḥiyal al-Mutanabbīn'' (''On the Tricks of False Prophets''). According to Biruni, the first "was claimed to be against religions" and the second "was claimed as attacking the necessity of the prophets."<ref name="Biruni">{{Cite journal| volume = 9| pages = 51–100| last = Deuraseh| first = Nurdeng| title = Risalat Al-Biruni Fi Fihrist Kutub Al-Razi: A Comprehensive Bibliography of the Works of Abu Bakr Al-Rāzī (d. 313 A.h/925) and Al-Birūni (d. 443/1051)| journal = Journal of Aqidah and Islamic Thought| year = 2008}}</ref> However, Biruni also listed some other works of al-Razi on religion, including ''Fi Wujub Da‘wat al-Nabi ‘Ala Man Nakara bi al-Nubuwwat'' (''Obligation to Propagate the Teachings of the Prophet Against Those who Denied Prophecies'') and ''Fi anna li al-Insan Khaliqan Mutqinan Hakiman'' (''That Man has a Wise and Perfect Creator''), listed under his works on the "divine sciences".<ref name="Biruni" /> None of his works on religion are now extant in full.

[[Sarah Stroumsa]] has argued that al-Razi was a freethinker who rejected all revealed religions.<ref>{{harvnb|Adamson|2021b|p=122}}.</ref> However, [[Peter Adamson (philosopher)|Peter Adamson]], [[Marwan Rashed]] and others hold that al-Razi did not reject revealed religion, on the basis of more recent evidence found in the writings of the theologian and philosopher [[Fakhr al-Din al-Razi]] (died 1210).<ref>{{harvnb|Adamson|2021a}}, {{harvnb|Rashed|2008}}, {{harvnb|Güngör|2023}}.</ref> Adamson states:[[File:Rhazes (c. 1906) - Veloso Salgado.png|thumb|upright=0.9|al-Razi as depicted by [[Veloso Salgado]] ({{circa|1906}})]]<blockquote>It is worth noting that Stroumsa’s work predates Rashed’s discovery of this evidence in Fakhr al-Dīn, so that she did not have the benefit of being able to consider how this new information could be reconciled with the Proofs. That is the goal I will set for myself in this chapter. I should lay my cards on the table and say that I am persuaded by Rashed’s account, and do not believe that Razi was staging a general attack on prophecy or religion as Abū Ḥātim would have us think.<ref>{{harvnb|Adamson|2021b|p=123}}.</ref></blockquote>

=== Debate with Abu Hatim ===

The views and quotes that are often ascribed to al-Razi where he appears to be critical of religion are found in a book written by [[Abu Hatim Ahmad ibn Hamdan al-Razi|Abu Hatim al-Razi]], called ''Aʿlām al-nubuwwa'' (Signs of Prophecy), which documents a debate between Abu Hatim and al-Razi. Abu Hatim was an [[Isma'ili]] missionary who debated al-Razi, but whether he has faithfully recorded the views of al-Razi is disputed.<ref name=oxford /> Some historians claim that Abu Hatim accurately represented al-Razi's scepticism of revealed religion while others argue that Abu Hatim's work should be treated with scepticism given that he is a hostile source of al-Razi's beliefs and might have portrayed him as a heretic to discount his critique of the Ismāʿīlīs.<ref name="Seyyed Hossein Nasr 1999 p. 353">Seyyed Hossein Nasr, and Mehdi Amin Razavi, ''An Anthology of Philosophy in Persia'', vol. 1, (New York: Oxford University Press, 1999), p. 353, quote: "Among the other eminent figures who attacked Rāzī are the Ismāʿīlī philosopher Abū Ḥatem Rāzī, who wrote two books to refute Rāzī's views on theodicy, prophecy, and miracles; and Nāṣir-i Khusraw. Shahrastānī, however, indicates that such accusations should be doubted since they were made by Ismāʿīlīs, who had been severely attacked by Muḥammad ibn Zakariyyā Rāzī"</ref>

According to Abdul Latif al-'Abd, Islamic philosophy professor at Cairo University, Abu Hatim and his student, [[Ḥamīd al-dīn Karmānī]] (d. after 411AH/1020CE), were Isma'ili extremists who often misrepresented the views of al-Razi in their works.<ref name="al-Abd" /><ref>{{Cite book| publisher = BRILL| isbn = 9789004255371| last = Ebstein| first = Michael| title = Mysticism and Philosophy in al-Andalus: Ibn Masarra, Ibn al-ʿArabī and the Ismāʿīlī Tradition| date = 25 November 2013|page=41}}</ref> This view is also corroborated by early historians like [[al-Shahrastani]] who noted "that such accusations should be doubted since they were made by Ismāʿīlīs, who had been severely attacked by Muḥammad ibn Zakariyyā Rāzī".<ref name="Seyyed Hossein Nasr 1999 p. 353"/> Al-'Abd points out that the views allegedly expressed by al-Razi contradict what is found in al-Razi's own works, like the ''Spiritual Medicine'' (''Fī al-ṭibb al-rūḥānī'').<ref name="al-Abd">{{Cite book| publisher = Maktabat al-Nahḍa al-Miṣriyya| last = Abdul Latif Muhammad al-Abd| title = Al-ṭibb al-rūḥānī li Abū Bakr al-Rāzī| location = Cairo| year = 1978| pages=4, 13, 18}}</ref> Peter Adamson concurs that Abu Hatim may have "deliberately misdescribed" al-Razi's position as a rejection of Islam and revealed religions. Instead, al-Razi was only arguing against the use of miracles to prove [[Muhammad]]'s prophecy, [[anthropomorphism]], and the uncritical acceptance of ''[[taqlīd]]'' vs ''naẓar''.<ref name=oxford /> Adamson points out to a work by [[Fakhr al-din al-Razi]] where al-Razi is quoted as citing the [[Quran]] and the prophets to support his views.<ref name=oxford />

In contrast, earlier historians such as [[Paul Kraus (Arabist)|Paul Kraus]] and Sarah Stroumsa accepted that the extracts found in Abu Hatim's book were either said by al-Razi during a debate or were quoted from a now lost work. According to the debate with Abu Hatim, al-Razi denied the validity of prophecy or other authority figures, and rejected prophetic miracles. He also directed a scathing critique on revealed religions and the miraculous quality of the Quran.<ref name=oxford /><ref>{{cite book | author=Paul E. Walker | editor=Charles E. Butterworth| title=The Political aspects of Islamic philosophy: essays in honor of Muhsin S. Mahdi | year=1992 | publisher=Harvard University Press | pages=87–89 | chapter=The Political Implications of Al-Razi's Philosophy| isbn=9780932885074|chapter-url=https://books.google.com/books?id=WPc-h9TeED4C&pg=PA87}}</ref> They suggest that this lost work is either his famous ''al-ʿIlm al-Ilāhī'' or another shorter independent work called ''Makharīq al-Anbiyāʾ'' (''The Prophets' Fraudulent Tricks'').<ref name=Stroumsa>{{harvnb|Stroumsa|1999}}.</ref><ref name=Encyclopedia>{{cite book | title=Encyclopedia of Islam | chapter=Al-Razi |author1=Kraus, P  |author2=Pines, S | year=1913–1938 | page=1136}}</ref> Abu Hatim, however, did not explicitly mention al-Razi by name in his book, but referred to his interlocutor simply as the ''mulḥid'' ({{lit|heretic}}).<ref name=oxford /><ref name="al-Abd" />

==Criticism==
[[File:Al-Razi Window.jpg|thumb|upright=1|Stained-glass window depicting al-Razi ([[Princeton University Chapel]], {{Circa|1924–1928}})]]
Al-Razi's religious and philosophical views were later criticized by [[Abu Rayhan Biruni]] and [[Avicenna]] in the early 11th century. Biruni in particular wrote a short treatise (''[[risalah (fiqh)|risala]]'') dealing with al-Razi, criticizing him for his sympathy with [[Manichaeism]],<ref name=Watt>{{cite web|author=William Montgomery Watt|date=14 April 2004|title=BĪRŪNĪ and the study of non-Islamic Religions|url=http://www.fravahr.org/spip.php?article31|access-date=25 January 2008|url-status=dead|archive-url=https://web.archive.org/web/20090210053854/http://www.fravahr.org/spip.php?article31|archive-date=10 February 2009|author-link=William Montgomery Watt}}</ref> his [[Hermeticism|Hermetical]] writings, his religious and philosophical views,<ref>Seyyed [[Hossein Nasr]] (1993), ''An Introduction to Islamic Cosmological Doctrines'', p. 166. [[State University of New York Press]], {{ISBN|0-7914-1516-3}}.</ref> for refusing to [[Physics in medieval Islam|mathematize physics]], and his active opposition [[Mathematics in medieval Islam|to mathematics]].<ref>{{citation|title=Studies in Arabic versions of Greek texts and in mediaeval science|volume=2|author=Shlomo Pines|publisher=[[Brill Publishers]]|year=1986|isbn=978-965-223-626-5|page=340|author-link=Shlomo Pines}}</ref> Avicenna, who was himself a physician and philosopher, also criticized al-Razi.<ref>{{citation|title=Studies in Arabic versions of Greek texts and in mediaeval science|volume=2|author=Shlomo Pines|publisher=[[Brill Publishers]]|year=1986|isbn=978-965-223-626-5|page=362|author-link=Shlomo Pines}}</ref> During a debate with Biruni, Avicenna stated:

{{blockquote|Or from Muhammad ibn Zakariyya al-Razi, who meddles [[Islamic metaphysics|in metaphysics]] and exceeds his competence. He should have remained confined to surgery and [[Urinalysis|to urine]] and [[stool test]]ing—indeed he exposed himself and showed his ignorance in these matters.<ref name=Berjak>Rafik Berjak and Muzaffar Iqbal, "Ibn Sina—Al-Biruni correspondence", ''Islam & Science'', December 2003.</ref>}}

[[Nasr-i-Khosraw]] posthumously accused him of having plagiarized [[Iranshahri]], whom Khosraw considered the master of al-Razi.<ref>{{Cite book| publisher = North Atlantic Books| isbn = 9781556432699| last = Corbin| first = Henry| title = The Voyage and the Messenger: Iran and Philosophy| date = 1998| page=72| quote=Al-Razi was posthumously accused of having plagiarized his master in Nasr-i-Khosraw polemics, and the latter did not hide his sympathy for Iranshahri.}}</ref>

==Legacy==
The modern-day [[Razi Vaccine and Serum Research Institute|Razi Institute]] in [[Karaj]] and [[Razi University]] in [[Kermanshah]] were named after him. A "Razi Day" ("Pharmacy Day") is commemorated in Iran every 27 August.<ref>[http://qhu.ac.ir/default.aspx?culture=fa-IR&page=news&newsid=350 qhu.ac.ir]{{dead link|date=December 2017 |bot=InternetArchiveBot |fix-attempted=yes }}, Razi commemoration day</ref>

In June 2009, [[Iran]] donated a "Scholars Pavilion" or Chartagi to the [[United Nations Office in Vienna]], now placed in the central Memorial Plaza of the [[Vienna International Center]].<ref>{{cite web|url=http://www.unis.unvienna.org/unis/pressrels/2009/unisvic167.html|title=Monument to Be Inaugurated at the Vienna International Centre, 'Scholars Pavilion' donated to International Organizations in Vienna by Iran|last=UNIS}}</ref> The pavilion features the statues of al-Razi, [[Avicenna]], [[Abū Rayḥān al-Bīrūnī|Abu Rayhan Biruni]], and [[Omar Khayyam]].<ref>{{cite web |url=http://en.viennaun.mfa.ir/index.aspx?fkeyid=&siteid=207&pageid=28858 |title=Permanent mission of the Islamic Republic of Iran to the United Nations office – Vienna |access-date=6 January 2015 |archive-url=https://web.archive.org/web/20190914135224/http://en.viennaun.mfa.ir/index.aspx?fkeyid=&siteid=207&pageid=28858 |archive-date=14 September 2019 |url-status=dead }}</ref><ref>{{cite web|url=http://parseed.ir/?ez=8002 |title=Negareh: Persian Scholars Pavilion at United Nations Vienna, Austria|first=Mir Masood|last=Hosseini}}</ref>

[[George Sarton]] remarked him as "greatest physician of Islam and the Medieval Ages".<ref>George Sarton, ''Introduction to the History of Science'' (1927–48), 1.609</ref>
{{clear}}

==See also==
{{columns-list|
* [[List of Iranian scientists]]
* ''[[Medical Encyclopedia of Islam and Iran]]''
* [[Medical literature]]
}}

==References==
===Notes===
{{notelist}}

===Citations===
{{Reflist|2}}

===Sources===
{{refbegin|2}}
* {{cite encyclopedia|last1=Adamson|first1=Peter|author1-link=Peter Adamson (philosopher)|date=2021a|title=Abu Bakr al-Razi|encyclopedia=The Stanford Encyclopedia of Philosophy|editor1-last=Zalta|editor1-first=Edward N.|editor1-link=Edward N. Zalta|url=https://plato.stanford.edu/archives/sum2021/entries/abu-bakr-al-razi}}
* {{cite book |last1=Arberry |first1=Arthur John |author1-link=Arthur John Arberry |title=Revelation and Reason in Islam |date=2008 |publisher=Routledge |isbn=9780415438872}}
* {{Cite book|last1=Browne|first1=Edward G.|author1-link=Edward Granville Browne|date=1921|title=Arabian Medicine, Being the Fitzpatrick Lectures Delivered at the College of Physicians in November 1919 and November 1920|location=Cambridge|publisher=Cambridge University Press|pages=44–53|oclc=808169546|url=https://archive.org/stream/arabianmedicineb00browiala#page/44/}}
* {{cite encyclopedia|last1=Dhanani|first1=Alnoor|date=2013|title=Atomism|editor1-last=Fleet|editor1-first=Kate|editor2-last=Krämer|editor2-first=Gudrun|editor3-last=Matringe|editor3-first=Denis|editor4-last=Nawas|editor4-first=John|editor5-last=Rowson|editor5-first=Everett|encyclopedia=Encyclopaedia of Islam, Three|doi=10.1163/1573-3912_ei3_COM_24249}}
* {{cite book |last1=Duffin |first1=Jacalyn |title=History of Medicine: A Scandalously Short Introduction |author1-link=Jacalyn Duffin |date=2021 |publisher=University of Toronto Press |isbn=978-1-4875-0917-0 |edition=3rd}}
* {{cite book |last=Frye |first=Richard N. |title=The Cambridge history of Iran, Volume 4 |author1-link=Richard N. Frye |date=1975 |publisher=Cambridge University Press |location=London |isbn=978-0-521-20093-6 |edition=Reprint}}
* {{cite encyclopedia|last1=Goodman|first1=L.E|date=1960–2007|title=al-Rāzī|editor1-last=Bearman|editor1-first=P.|editor2-last=Bianquis|editor2-first=Th.|editor3-last=Bosworth|editor3-first=C.E.|editor4-last=van Donzel|editor4-first=E.|editor5-last=Heinrichs|editor5-first=W.P.|encyclopedia=Encyclopaedia of Islam, Second Edition|doi=10.1163/1573-3912_islam_SIM_6267}}
* {{cite book |last1=Hitti |first1=Philip Khuri |author1-link=Philip Khuri Hitti |title=Makers of Arab History |date=January 1, 1969 |publisher=St. Martin's Press}}
* {{cite encyclopedia|last1=Iskandar|first1=Albert Z.|date=2008|title=Al-Rāzī|editor1-last=Selin|editor1-first=Helaine|editor1-link=Helaine Selin|encyclopedia=Encyclopaedia of the History of Science, Technology, and Medicine in Non-Western Cultures|edition=2nd|pages=155–156|location=Berlin|publisher=Springer|isbn=978-1-4020-4559-2}}
* {{cite book |last1=Kahl |first1=Oliver |title=The Sanskrit, Syriac and Persian Sources in the Comprehensive Book of Rhazes |date=2015 |publisher=BRILL |isbn=978-90-04-29024-2}}
* {{Cite web |last=Oxford Reference |date=2022|title=Abu Bakr Muhammad ibn Zakariyya al- Razi |url=https://www.oxfordreference.com/view/10.1093/oi/authority.20110803100406326 |access-date=2022-03-03 |website=Oxford Reference|language=en}}
* {{cite encyclopedia|last1=Kraus|first1=Paul|author1-link=Paul Kraus (Arabist)|last2=Pines|first2=Shlomo|author2-link=Shlomo Pines|date=1913–1936|title=al-Rāzī|encyclopedia=Encyclopaedia of Islam, First Edition (1913–1936)|editor1-last=Houtsma|editor1-first=M. Th.|editor2-last=Arnold|editor2-first=T.W.|editor3-last=Basset|editor3-first=R.|editor4-last=Hartmann|editor4-first=R.|doi=10.1163/2214-871X_ei1_SIM_3693}}
* {{cite book |last1=Walzer |first1=Richard |author1-link=Richard Rudolf Walzer |title=Greek Into Arabic Essays on Islamic Philosophy |date=1962 |publisher=Harvard University Press |edition=Oriental Studies I |isbn=978-0674362758}}
* {{Encyclopædia Iranica|volume=12|fascicle=1|last=Richter-Bernburg|first=Lutz|title=Ḥāwi, al-|pages=64–67|url=https://iranicaonline.org/articles/hawi-medical-book}}
* {{cite book |last1=Sarton |first1=George |title=Introduction to the History of Science, Volume 1 |date=1927 |author1-link=George Sarton |isbn=978-0443092060}}
* {{cite book|last1=Stroumsa|first1=Sarah Stroumsa|author1-link=Sarah Stroumsa|date=1999|title=Freethinkers of Medieval Islam: Ibn al-Rāwandī, Abū Bakr al-Rāzī, and Their Impact on Islamic Thought|series=Islamic Philosophy, Theology and Science. Texts and Studies|volume=35|location=Leiden|publisher=Brill|isbn=978-90-04-11374-9}}
* {{cite book |last1=Ullmann |first1=Manfred |author1-link=:de:Manfred Ullmann |title=Islamic Medicine |date=February 1997 |publisher=Edinburgh University Press |isbn=9780748609079}}
* {{cite encyclopedia|last1=Walker|first1=Paul E.|date=1998|title=al-Razi, Abu Bakr Muhammad ibn Zakariyya' (d. 925)|editor1-last=Craig|editor1-first=Edward|editor1-link=Edward Craig (philosopher)|encyclopedia=Routledge Encyclopedia of Philosophy|doi=10.4324/9780415249126-H043-1|isbn=9780415250696}}
* {{cite book |last1=Ziai |first1=Hossein |author1-link=Hossein Ziai |year=2005 |chapter=Recent trends in Arabic and Persian philosophy |editor1-last=Adamson |editor1-first=Peter |editor1-link=Peter Adamson (philosopher) |editor2-last=Taylor |editor2-first=Richard C. |title=The Cambridge Companion to Arabic Philosophy |location=Cambridge |publisher=Cambridge University Press |pages=405–425 |isbn=978-0521520690}}
{{refend}}

==Further reading==
===Primary literature===
====By al-Razi====
{{refbegin|2}}
* {{cite book|last=Arberry|first=A.J.|title=The Spiritual Physick of Rhazes|work=The Wisdom of the East Series|year=1950}}
* [[Carl Brockelmann|Brockelmann, Carl]]. ''Geschichte der arabischen Litteratur'', I, pp.&nbsp;268–71 (second edition), Suppl., Vol. I, pp.&nbsp;418–21. (overview of extant manuscripts of al-Razi's works)
* [[Charles Butterworth (philosopher)|Butterworth, Charles E.]], "[https://web.archive.org/web/20120723063106/http://interpretationjournal.com/backissues/Vol_20-3.pdf#page=5 The Book of the Philosophic Life]". ''Interpretation: A Journal of Political Philosophy.''
* {{cite book|last1=Dānish-pazhūh|first1=Muḥammad Taqī|date=1964|title=Kitāb al-asrār wa-Sirr al-asrār|location=Tehran|publisher=Commission Nationale Iranienne pour l'UNESCO|url=http://dlib.nyu.edu/aco/book/columbia_aco001618}} (edition of the {{transliteration|ar|Kitāb al-asrār}} and fascimile of the {{transliteration|ar|Sirr al-asrār}} in ms. Goharshad 953)
* {{cite book|last1=Karimov|first1=Usmon I.|date=1957|title=Neizvestnoe sochinenie ar-Razi "Kniga taĭny taĭn"|location=Tashkent|publisher=Izd-vo Akademii nauk Uzbekskoĭ SSR|oclc=246883935}} (fascimile of the {{transliteration|ar|Sirr al-asrār}} in a Tashkent ms., with Russian translation)
**Review in {{cite journal|last1=Figurovsky|first1=N.A.|title=Review of Karimov 1957|journal=Ambix|date=1962|volume=10|issue=3|pages=146–149}}
* {{cite book|last1=Koetschet|first1=Pauline|date=2019|title=Abū Bakr al-Rāzī: Doutes sur Galien. Introduction, édition et traduction|series=Scientia Graeco-Arabica|volume=25|location=Berlin|publisher=De Gruyter|doi=10.1515/9783110629767|isbn=9783110629767 |s2cid=189234965 }} (critical edition and French translation of {{transliteration|ar|al-Shukūk ʿalā Jalīnūs}})
* {{cite book|last1=Kraus|first1=Paul|author1-link=Paul Kraus (Arabist)|date=1939|title=Abi Bakr Mohammadi Filii Zachariae Raghensis: Opera Philosophica, fragmentaque quae supersunt. Pars Prior|series=Universitatis Fouadi I litterarum facultatis publicationum|volume=22|location=Cairo|publisher=Jāmiʿat Fuʾād al-Awwal|oclc=496583777}} (edition of extant philosophical works)
* {{cite book|last1=Mohaghegh|first1=Mehdi|author1-link=Mehdi Mohaghegh|date=1993|title=Kitâb Al – Shukûk ʻAlâ Jâlînûs|location=Tehran|publisher=International Institute of Islamic Though and Civilization|oclc=257281952}} (edition of {{transliteration|ar|al-Shukūk ʿalā Jalīnūs}}, superseded by {{harvnb|Koetschet|2019}}) 
* {{cite book|last1=Ruska|first1=Julius|author1-link=Julius Ruska|date=1937 |title=Al-Rāzī's Buch Geheimnis der Geheimnisse. Mit Einleitung und Erläuterungen in deutscher Übersetzung|series=Quellen und Studien zur Geschichte der Naturwissenschaften und der Medizin|volume=VI|location=Berlin|publisher=Springer}} (German translation of the {{transliteration|ar|Kitāb al-asrār}})
** {{cite book|last1=Taylor|first1=Gail Marlow|date=2015|title=The Alchemy of Al-Razi: A Translation of the "Book of Secrets"|publisher=CreateSpace Independent Publishing Platform|isbn=9781507778791}} (English translation of Ruska 1937's translation of the Arabic)
* {{cite journal|last1=Stapleton|first1=Henry E.|author1-link=Henry Ernest Stapleton|last2=Azo|first2=Rizkallah F.|date=1910|title=An Alchemical Compilation of the 13th Century|journal=Memoirs of the Asiatic Society of Bengal|volume=3|issue=2|pages=57–94|url=https://archive.org/details/memoirsofasiatic03asia/page/n69}} (contains edited extracts from the {{transliteration|ar|Kitāb al-Shawāhid}} at [https://archive.org/details/memoirsofasiatic03asia/page/n83 68ff.])
* {{cite journal <!-- Citation bot bypass-->|last1=Stapleton|first1=Henry E.|author1-link=Henry Ernest Stapleton|last2=Azo|first2=R.F.|last3=Hidayat Husain|first3=M.|year=1927|title=Chemistry in Iraq and Persia in the Tenth Century A.D.|journal=Memoirs of the Asiatic Society of Bengal|volume=VIII|issue=6|pages=317–418|oclc=706947607|url=http://www.southasiaarchive.com/Content/sarf.100203/231270|ref=none}} (pp.&nbsp;369–393 contain an English translation of two introductory sections of the {{transliteration|ar|Kitāb al-asrār}}; contains an edition of {{transliteration|ar|al-Madkhal al-Talʿlīmī}})

====By others====
* Ibn Al-Nadim, ''Fihrist'', (ed. Flugel), pp.&nbsp;299 et sqq.
** Translated in {{cite journal|last1=Fück|first1=Johann W.|author-link=Johann Fück|year=1951|title=The Arabic Literature on Alchemy According to An-Nadīm (A.D. 987)|journal=Ambix|volume=4|issue=3–4|pages=81–144|doi=10.1179/amb.1951.4.3-4.81}}
* [[Said Al-Andalusi|Sa'id al-Andalusi]], ''Tabaqat al-Umam'', p.&nbsp;33
* Ibn Juljul, ''Tabaqat al-Atibba w-al-Hukama'', (ed. Fu'ad Sayyid), Cairo, 1355/1936, pp.&nbsp;77–78
* J. Ruska, ''Al-Biruni als Quelle für das Leben und die Schriften al-Razi's, Isis'', Vol. V, 1924, pp.&nbsp;26–50.
* Al-Biruni, ''Epitre de Beruni, contenant le répertoire des oeuvres de Muhammad'' ibn ''Zakariya ar-Razi'', publié par P. Kraus, Paris, 1936
* Al-Baihaqi, ''Tatimmah Siwan al-Hikma'', (ed. M. Ghafi), Lahore, 1351/1932
* Al-Qifti,''Tarikh al-Hukama'', (ed. Lippert), pp.&nbsp;27–177
* Ibn Abi Usaibi'ah,''Uyun al-Anba fi Tabaqat al-Atibba'', Vol. I, pp.&nbsp;309–21
* Abu Al-Faraj ibn al-'Ibri (Bar-Hebraeus),''Mukhtasar Tarikh al-Duwal'', (ed. A. Salhani), p.&nbsp;291
* [[Ibn Khallikan]], ''Wafayat al-A'yan'', (ed. Muhyi al-Din 'Abd al-Hamid), Cairo, 1948, No. 678, pp.&nbsp;244–47
* Al-Safadi, ''Nakt al-Himyan'', pp.&nbsp;249–50
* [[Ibn al-'Imad]], ''Shadharat al-Dhahab'', Vol. II, p.&nbsp;263
* Al-'Umari, ''Masalik al-Absar'', Vol. V, Part 2, ff. 301-03 (photostat copy in Dar al-Kutub al-Misriyyah).
{{refend}}

===Secondary literature===
{{refbegin|2}}
*{{cite book |last1=Adamson |first1=Peter |author1-link=Peter Adamson (philosopher) |date=2016 |chapter=Atomismus bei ar-Rāzī |editor1-last=Buchheim |editor1-first=Thomas |editor2-last=Meißner |editor2-first=David |editor3-last=Wachsmann |editor3-first=Nora |title=Sōma: Körperkonzepte und körperliche Existenz in der antiken Philosophie und Literatur |series=Archiv für Begriffsgeschichte, Sonderheft 13 |location=Hamburg |publisher=Meiner |pages=345–360}}
*{{cite book |last1=Adamson |first1=Peter |author1-link=Peter Adamson (philosopher) |date=2017 |chapter=Abū Bakr al-Rāzī (d. 925), The Spiritual Medicine |editor1-last=El-Rouayheb |editor1-first=Khaled |editor2-last=Schmidtke |editor2-first=Sabine |title=The Oxford Handbook of Islamic Philosophy |location=Oxford |publisher=Oxford University Press |pages=63–82}}
*{{cite book |last1=Adamson |first1=Peter |author1-link=Peter Adamson (philosopher) |date=2021b |title=Great Medieval Thinkers: al-Rāzī |location=New York |publisher=Oxford University Press |isbn=9780197555033 |doi=10.1093/oso/9780197555033.001.0001}}
* [[Abdurrahman Badawi|Badawi, Abdurrahman]], ''Min Tarlkh al-Ilhad fi al-Islam Islamica'', Vol. II, Cairo, 1945, pp.&nbsp;198–228.
*{{cite book |last1=Daiber |first1=Hans |date=2017 |orig-date=2012 |chapter=Abū Bakr al-Rāzī |editor1-last=Rudolph |editor1-first=Ulrich |editor2-last=Hansberger |editor2-first=Rotraud |editor3-last=Adamson |editor3-first=Peter |editor3-link=Peter Adamson (philosopher) |title=Philosophy in the Islamic World. Volume 1: 8th–10th Centuries |location=Leiden |publisher=Brill |pages=381–420 |isbn=978-90-04-32316-2 |doi=10.1163/2543-2729_PIWO_COM_001601}}
* Eisen, A. ''Kimiya al-Razi'', RAAD, DIB, 62/4.
*{{cite journal |last1=Goodman |first1=Lenn E. |author1-link=Lenn E. Goodman |date=1971 |title=The Epicurean Ethic of M. b. Zakariya' al-Razi |journal=Studia Islamica |volume=34 |pages=5–26 |doi=10.2307/1595324 |jstor=1595324}}
*{{cite journal |last1=Goodman |first1=Lenn E. |author1-link=Lenn E. Goodman |date=1972 |title=Razi's Psychology |journal=Philosophical Forum |volume=4 |pages=26–48}}
*{{cite book |last1=Goodman |first1=Lenn E. |author1-link=Lenn E. Goodman |date=1975 |chapter=Razi's Myth of the Fall of the Soul: Its Function in His Philosophy |editor1-last=Hourani |editor1-first=G. |title=Essays in Islamic Philosophy and Science |location=Albany, NY |publisher=State University of New York Press |pages=25–40}}
*{{cite journal |last1=Goodman |first1=Lenn E. |author1-link=Lenn E. Goodman |date=2015 |title=How Epicurean was Rāzī? |journal=Studia graeco-arabica |volume=5 |pages=247–280}}
* {{Cite journal |last=Güngör |first=Hüseyin |title=Razian prophecy rationalized |journal=British Journal for the History of Philosophy |date=2023 |volume=32 |issue=3 |pages=401–425 |doi=10.1080/09608788.2023.2235613 |url=https://philarchive.org/rec/GNGRPR}}
* {{cite journal |last1=Heym |first1=Gerard |date=1938 |title=Al-Rāzī and Alchemy |journal=Ambix |volume=1 |issue=3 |pages=184–191 |doi=10.1179/amb.1938.1.3.184}}
* Hirschberg,''Geschichte der Augenheilkunde'', p.&nbsp;101.
* {{Cite journal |last1=Karpenko |first1=Vladimír |last2=Norris |first2=John A. |year=2002 |title=Vitriol in the History of Chemistry |journal=Chemické listy |volume=96 |issue=12 |pages=997–1005 |url=http://www.chemicke-listy.cz/ojs3/index.php/chemicke-listy/article/view/2266}}
* [[Lucien Leclerc|Leclerc, Lucien]] (1876). ''Histoire de la medicine arabe'', Paris, Vol. I, pp.&nbsp;337–54.
* Meyerhof, M. ''Legacy of Islam'', pp.&nbsp;323 et seq.
* [[Aldo Mieli|Mieli, Aldo]] (1938). ''La science arabe'', Leiden, 1938, pp.&nbsp;8, 16.
* {{cite journal |last1=Moureau |first1=Sébastien |date=2020 |title=Min al-kīmiyāʾ ad alchimiam. The Transmission of Alchemy from the Arab-Muslim World to the Latin West in the Middle Ages |journal=Micrologus |volume=28 |issue= |pages=87–141 |hdl=2078.1/211340 |url=http://hdl.handle.net/2078.1/211340}} (a survey of all Latin alchemical texts attributed to authors writing in Arabic, including Latin texts attributed to al-Razi)
* {{cite book |last=Multhauf |first=Robert P. |author-link=Robert P. Multhauf |year=1966 |title=The Origins of Chemistry |location=London |publisher=Oldbourne |oclc=977570829}}
* {{cite journal |last1=Partington |first1=J. R. |author1-link=J. R. Partington |date=1938 |title=The Chemistry of Rāzī |journal=Ambix |volume=1 |issue=3 |pages=192–196 |doi=10.1179/amb.1938.1.3.192}}
* Pines, S. ''Die Atomenlehre ar-Razi's in Beitrage zur islamischen Atomenlehre'', Berlin, 1936, pp.&nbsp;34–93.
* {{cite journal |last1=Pormann |first1=Peter E. |last2=Selove |first2=Emily |date=2017 |title=Two New Texts on Medicine and Natural Philosophy by Abū Bakr al-Rāzī |journal=Journal of the American Oriental Society |volume=137 |issue=2 |pages=279–299 |doi=10.7817/jameroriesoci.137.2.0279 |jstor=10.7817/jameroriesoci.137.2.0279 |doi-access=free}}
* Ranking, G. S. A. (1913). ''The Life and Works of Rhazes'', in Proceedings of the Seventeenth International Congress of Medicine, London, pp.&nbsp;237–68.
* {{Cite journal |last=Rashed |first=Marwan |author-link=Marwan Rashed |title=Abū Bakr Al-Rāzī Et La Prophétie |journal=MIDÉO |date=2008 |pages=169–182 |url=https://alkindi.ideo-cairo.org/manifestation/211468}}
* Renaud, H. P. J. (1931). ''A propos du millenaire de Razes'', in Bulletin de la Société Française d'Histoire de la Médicine, Mars-avril, pp.&nbsp;203 et seq.
* Rockey, Denyse and Johnstone, Penelope (1979). [https://www.ncbi.nlm.nih.gov/pubmed/374430 "Medieval Arabic views on speech disorders: Al-Razi (c. 865–925)"], in: ''Journal of Communication Disorders'', 12(3):229-43.
* {{cite journal |last1=Ruska |first1=Julius |author1-link=Julius Ruska |year=1924 |title=Über den gegenwärtigen Stand der Raziforschung |journal=Archeion |volume=V |pages=335–347 |doi=10.1484/J.arch.3.159}}
* {{cite journal |last1=Ruska |first1=Julius |author1-link=Julius Ruska |year=1928 |title=Der Salmiak in der Geschichte der Alchemie |journal=Zeitschrift für angewandte Chemie |volume=41 |issue=50 |pages=1321–1324 |doi=10.1002/ange.19280415006 |bibcode=1928AngCh..41.1321R}}
* {{cite journal |last1=Ruska |first1=Julius |author1-link=Julius Ruska |year=1935 |title=Die Alchemie ar-Rāzī's |journal=Der Islam |volume=22 |issue=4 |pages=281–319 |doi=10.1515/islm.1935.22.4.281 |s2cid=161271862}}
* {{cite journal |last1=Ruska |first1=Julius |author1-link=Julius Ruska |year=1939 |title=Pseudepigraphe Rasis-Schriften |journal=Osiris |volume=7 |pages=31–94 |doi=10.1086/368502 |s2cid=143373785}} (argues that most Latin texts attributed to al-Razi are [[pseudepigraphs]])
* {{cite journal |last1=Ruska |first1=Julius |author1-link=Julius Ruska |last2=Garbers |first2=Karl |year=1939 |title=Vorschriften zur Herstellung von scharfen Wässern bei Gabir und Razi |journal=Der Islam |volume=25 |issue= |pages=1–34 |doi=10.1515/islm.1938.25.1.1 |s2cid=161055255}} (contains a comparison of [[Jabir ibn Hayyan]]'s and Abu Bakr al-Razi's knowledge of chemical apparatus, processes and substances)
* Shader, H. H., ZDMG, 79, pp.&nbsp;228–35 (see translation into Arabic by [[Abdurrahman Badawi]] in ''al-Insan al-Kamil'', Islamica, Vol. XI, Cairo, 1950, pp.&nbsp;37–44).
* {{cite journal <!-- Citation bot bypass--> |last1=Stapleton |first1=Henry E. |author1-link=Henry Ernest Stapleton |last2=Azo |first2=R.F. |last3=Hidayat Husain |first3=M. |year=1927 |title=Chemistry in Iraq and Persia in the Tenth Century A.D. |journal=Memoirs of the Asiatic Society of Bengal |volume=VIII |issue=6 |pages=317–418 |oclc=706947607 |url=http://www.southasiaarchive.com/Content/sarf.100203/231270}} (contains an in-depth analysis of the {{transliteration|ar|Kitāb al-asrār}})
* {{cite journal |last1=Taylor |first1=Gail |date=2010 |title=The Kitab al-Asrar: An Alchemy Manual in Tenth-Century Persia |journal=Arab Studies Quarterly |volume=32 |issue=1 |pages=6–27 |jstor=41858601 |url=https://www.jstor.org/stable/41858601}}
* Von Lippmann, E. O. '' Entstehung und Ausbreitung der Alchemie'', Vol. II, p.&nbsp;181.
* [[F. Wüstenfeld|Wüstenfeld, F.]], ''Geschichte der Arabischen Arzte und Naturforscher'', ftn. 98.
{{refend}}

==External links==
{{Commons category}}
{{Wikiquote}}

* "[https://soundcloud.com/user-542495654-897696505/city-tour-baghdad Dr Al Razi's city tour of Baghdad]." Educational podcast released by the Leiden Learning & Innovation Centre as part of the Massive Open Online Course "Cosmopolitan Medieval Arabic World."
* {{Sep entry|abu-bakr-al-razi|Abu Bakr al-Razi|Peter Adamson}}
* [http://www.muslimphilosophy.com/ip/rep/H043 "al-Razi" on Islamic Philosophy Online], encyclopedia article about al-Razi by Paul E. Walker.
* [http://www.wdl.org/en/item/7476 ''Lives of the Physicians''], dating from 1882, features a biography, in Arabic, about Rhazes.

{{Islamic alchemy and chemistry|state=expanded}}
{{Alchemy}}
{{Islamic medicine}}
{{Islamic philosophy}}
{{Medieval Philosophy}}
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{{Authority control}}

{{DEFAULTSORT:Razi}}
[[Category:Muhammad ibn Zakariya al-Razi| ]]
[[Category:860s births]]
[[Category:10th-century deaths]]
[[Category:9th-century Iranian physicians]]
[[Category:10th-century Iranian physicians]]
[[Category:9th-century Iranian philosophers]]
[[Category:10th-century Iranian philosophers]]
[[Category:Alchemists of the medieval Islamic world]]
[[Category:Inventors of the medieval Islamic world]]
[[Category:Iranian inventors]]
[[Category:Medieval Iranian pharmacologists]]
[[Category:People from Ray, Iran]]
[[Category:Scholars from the Samanid Empire]]
[[Category:Critics of religions]]
[[Category:Iranian psychologists]]
[[Category:Iranian ethicists]]
[[Category:9th-century inventors]]
[[Category:Psychology in the medieval Islamic world]]