The Decisive Treatise is perhaps the most controversial work of Averroes (Ibn Rushd, 1126-1198) and belongs to a trilogy which boldly represent the philosophical contribution to Islamic theology of this famous Andalusian commentator on Aristotle. The Decisive Treatise is a fatwa (a legal opinion) that the judge, Averroes, promulgated for his fellow Malikite jurists in order to demonstrate that the study of philosophy is not only licit from the point of view of religious law, but even mandatory for the skilled people. However, many subjects are dealt with in this comparatively short book: An epistemology aimed to show that philosophical truth and religious truth are not in contradiction; a sociology of knowledge pointing out that humans are classified in three classes (philosophers, theologians, common folk); a Qur'anic hermeneutics suggesting how to approach philosophically the Holy Book in agreement with religious requirements and linguistic rules.

The study of Islamic philosophy has entered a new and exciting phase in the last few years. Both the received canon of Islamic philosophers and the narrative of the course of Islamic philosophy are in the process of being radically questioned and revised. Most twentieth-century Western scholarship on Arabic or Islamic philosophy has focused on the period from the ninth century to the twelfth. It is a measure of the transformation that is currently underway in the field that, unlike other reference works, the Oxford Handbook has striven to give roughly equal weight to every century, from the ninth to the twentieth. The Handbook is also unique in that its 30 chapters are work-centered rather than person- or theme-centered, in particular taking advantage of recent new editions and translations that have renewed interest and debate around the Islamic philosophical canon. The Oxford Handbook of Islamic Philosophy gives both the advanced student and active scholar in Islamic philosophy, theology, and intellectual history, a strong sense of what a work in Islamic philosophy looks like and a deep view of the issues, concepts, and arguments that are at stake. Most importantly, it provides an up-to-date portrait of contemporary scholarship on Islamic philosophy.

Available for the first time in the English language, this is a complete and annotated translation of a key work by the twelfth-century Muslim philosopher, Averroes (Ibn Rushd). Acknowledged as the leading transmitter of Aristotelian th ought, Averroes also held controversial views about the re lationship between faith and reason, arguing that religion should not be allowed to impose limits on the exercise of rational thought. His theory of rationality, along with others on language, justice and the interpretation of religious texts, is clearly presented here, in a work that provides the most comprehensive picture available of Averroes's great intellectual achievements.

Engages with all aspects of Averroes' philosophy, from his thinking on Aristotle to his influence on Islamic law.

Averroës (Ibn Rushd, 1126-1198) emerged from an eminent family in Muslim Spain to become the first and last great Aristotelian of the classical Islamic world; his meticulous commentaries influenced Christian thinkers and earned him favorable mention (and a relatively pleasant fate) in Dante's Divina Commedia. The Book of the Decisive Treatise was and remains one his most important works and one of history's best defenses of the legitimate role of reason in a community of faith. The text presents itself as a plea before a tribunal in which the divinely revealed Law of Islam is the sole authority; Averroës, critical of the anti-philosophical tone of the Islamic establishment, argues that the Law not only permits but also mandates the study of philosophy and syllogistic or logical reasoning, defending earlier Muslim philosophers and dismissing criticisms of them as more harmful to the Islamic community than the philosophers' own views had been. As he details the three fundamental methods the Law uses to aid people of varied capacities and temperaments, Averroës reveals a carefully formed and remarkably argued conception of the boundaries and uses of faith and reason.

This book describes the correlation which exists between religion and philosophy, the nature of external knowledge, and methods of argument and faith. It reveals the in-depth knowledge based on a collection of short works on religion by Averroës.