A respected author can be worth reading and still be wrong about something. The physician and philosopher Abu Bakr al-Razi, known in Latin as Rhazes, made that tension part of his work. He read Galen closely, used much of the inherited medical framework, and wrote a book called Doubts about Galen (Adamson, §§1 and 4).
His place in the history of the mind includes this examination of authority, but also ethical writing about reason, desire and the difficulty of judging oneself.
A physician and a philosophical writer
Al-Razi came from Rayy, near present-day Tehran. Peter Adamson’s scholarly account gives his dates as 865–925 CE; these are the dates used here. Biographers report that he directed hospitals in Rayy and Baghdad. He also wrote on philosophy and alchemy (Adamson, §1).
The name needs care: this is Abu Bakr al-Razi, not the later theologian Fakhr al-Din al-Razi. Confusing them can attach a work or an argument to the wrong person.
What kind of book was al-Hawi?
The Comprehensive Book on Medicine, or al-Hawi, was assembled after al-Razi’s death from working notes. The National Library of Medicine describes extracts from earlier writers together with his interpretations and observations. It was not a finished encyclopedia issued by him in a single publication event (NLM manuscript catalogue, MS A 17).
According to that catalogue, the statesman Ibn al-Amid acquired the notes from al-Razi’s sister and arranged for his pupils to organize them. The Hyderabad printed edition has 23 parts, published between 1955 and 1985. That modern edition count is different from the physical form of the original notes.
This changes how we read the book. A passage might be an extract from an earlier author, a comment on that extract, or an observation attributed to al-Razi. Those are different kinds of evidence. Calling the whole collection his personal case diary would blur them together.
Doubt did not mean throwing everything away
Pauline Koetschet’s introduction to the modern edition of Doubts about Galen describes a work crossing medicine, natural philosophy and metaphysics. Its questions include vision, matter, the world’s duration and the relation between soul and body (introduction, pp. XI–XIII).
Koetschet also traces how the Doubts led into a project of abridging Galen’s works (introduction, p. XII). Criticism and continued study belonged to the same intellectual activity. The surviving book does not support a story in which al-Razi simply abandoned earlier learning.
Adamson explains that al-Razi retained broadly Galenic medical concepts while challenging particular arguments. He also defended a rational soul distinct from its bodily instrument. An interest in observation therefore did not make his philosophy an exclusively material account of the mind (Adamson, §§1 and 4).
Reason and the problem of self-knowledge
Al-Razi’s Spiritual Medicine, translated by Arthur J. Arberry as The Spiritual Physick, is an ethical work. Its opening chapter presents reason as a gift from the Creator and gives it authority over passion (chapter I). The religious language is part of the text, alongside its praise of reasoning.
Chapter IV turns to a difficulty in judging character. Al-Razi argues that attachment to oneself can hide one’s faults. His proposed answer involves candid criticism from a close companion. The chapter explicitly acknowledges Galenic writings on recognizing faults.
That is Documented content of an ethical argument. It is not evidence for the effectiveness of a modern therapy, and it is not presented here as clinical advice. The passage matters because self-examination is made social: another person’s judgment enters an inquiry that someone cannot complete through self-approval alone.
A book’s later journey
In 1279, Faraj ben Salim, a Jewish physician from Sicily working for Charles of Anjou, translated al-Hawi into Latin as the Continens. The NLM catalogue documents that transmission.
NLM also holds a surviving portion of the Arabic work copied in 1094. A manuscript’s copying date tells us about that surviving object, not when al-Razi first composed its contents. Translation dates, manuscript dates and modern printing dates mark different stages in a book’s history.
How we know
What survives: Medical works, ethical works, and manuscript evidence. Other philosophical positions have to be reconstructed from reports.
Whose voices are missing: Notes written by physicians do not give patients an independent voice. Accounts by philosophical opponents may also select what they report.
What is uncertain: Parts of al-Razi’s biography and the full meaning of positions preserved mainly through critics (Adamson, introduction).
Then vs. now
Al-Razi’s books make distinctions worth preserving: an authority’s statement, a reader’s objection, an observed case and an ethical argument are not interchangeable. His work belongs in a history of inquiry without assigning him a modern diagnosis, a modern treatment claim or sole credit for the scientific study of the mind.