Meet the authorsAlrewaq
Imagined Alrewaq bookshop with an arched open doorway and a tall window displaying paired open manuscripts among orderly shelves.

Ibn Rushd

1126–1198 · Al-Andalus and Marrakesh

Philosophy · Law · Medicine

Enter the bookshop
An imagined bookshop within Alrewaq.

A life of inquiry

Ibn Rushd was born in Córdoba into a family distinguished in law and religious scholarship. He became a jurist, physician, and philosopher within the intellectual world of the Almohad rulers. His work brought together close study of Aristotle, legal reasoning, medicine, and questions about religion. Later readers in Latin knew him as Averroes and often as the Commentator, although that title can obscure the originality and range of his own arguments.

His writings include extensive commentaries on Aristotle, a major work of comparative jurisprudence, medical works, and The Decisive Treatise. In the latter, he asks about the status of philosophical inquiry within Islamic law. He argues that properly conducted reasoning and revelation cannot ultimately contradict one another, while placing demanding conditions on philosophical study and interpretation.

His distinctions among forms of reasoning and audiences belong to a particular intellectual and religious setting. They also show a thinker asking how inquiry can be responsible: what preparation it requires, how inherited learning should be assessed, and when an apparent disagreement calls for closer interpretation. His writings continued to travel through Arabic, Hebrew, and Latin traditions after his death.

Background sources

Five thoughts to spend time with

Quotations retain the wording of the cited editions. The explanations are Alrewaq’s editorial readings.

Seeking coherence in truth

truth does not oppose truth but accords with it and bears witness to it.

Ibn Rushd is arguing that demonstrative reasoning and the truth of revelation cannot finally conflict. An apparent conflict therefore calls for careful interpretation. The sentence belongs to that religious and philosophical argument; it does not say that every belief is equally true.

Source & edition · Seeking coherence in truth

The Decisive Treatise
Section 10

George F. Hourani, English translation, 1961.

A continuous excerpt from a longer sentence; the linked teaching selection contains the translation and editorial summaries.

Read the source (opens in a new tab)
This thought in Across the Islamic World

Religious grounds for inquiry

The Law encourages and exhorts us to observe creation.

At the opening of his argument, Ibn Rushd connects observing the created world with knowing its maker. He is asking whether philosophical inquiry is commended by Islamic law. The sentence places investigation within that religious argument, rather than outside or against it.

Source & edition · Religious grounds for inquiry

The Decisive Treatise
Opening argument on observing creation

Mohammad Jamil-ur-Rehman, English translation, 1921.

This edition calls the treatise A Decisive Discourse. The 1921 title page credits this translator; its English text is public domain in the United States.

Read the source (opens in a new tab)

Knowledge grows through other people

For no one is capable of discovering by himself alone everything which is required.

Ibn Rushd compares philosophy with other sciences and arts, where inquiry depends on the work of predecessors. He also allows learning from thinkers outside his religious community. The sentence supports that cumulative view of knowledge without requiring uncritical acceptance of earlier authorities.

Source & edition · Knowledge grows through other people

The Decisive Treatise
Argument for learning from predecessors, before discussion of ancient philosophical books

Mohammad Jamil-ur-Rehman, English translation, 1921.

A complete sentence in the 1921 translation.

Read the source (opens in a new tab)

Taking causes seriously

To deny the causes altogether is a thing which is unintelligible to human reason.

In a discussion of human action and divine determination, Ibn Rushd defends the intelligibility of causes. For him, recognizing created agents does not remove dependence on God.

Source & edition · Taking causes seriously

An Exposition of the Methods of Argument
Third Problem · Of Fate and Predestination

Mohammad Jamil-ur-Rehman, English translation, 1921.

A complete sentence from a different treatise collected in The Philosophy and Theology of Averroes.

Read the source (opens in a new tab)

Recognizing justice and injustice

Justice is known as good, and injustice as bad.

The distinction appears in Ibn Rushd’s argument about divine justice and his disagreement with rival theological accounts. It treats moral terms as intelligible, rather than empty labels.

Source & edition · Recognizing justice and injustice

An Exposition of the Methods of Argument
Fourth Problem · Divine Justice and Injustice

Mohammad Jamil-ur-Rehman, English translation, 1921.

A complete sentence in the 1921 translation.

Read the source (opens in a new tab)
Books & further reading

The Decisive Treatise

Examines the place of philosophical inquiry within religious life.

Commentaries on Aristotle

A substantial body of explanatory philosophical writing.