The series is devoted to the study of scientific and philosophical texts from the Classical and the Islamic world handed down in Arabic. Through critical text editions and monographs, it provides access to ancient scientific inquiry as it developed in a continuous tradition from Antiquity to the modern period. All editions are accompanied by translations and philological and explanatory notes.

When several things are ordained to one thing, one of them must rule or govern and the rest be ruled or governed, as the Philosopher, teaches in the Politics. This is evident in the union of soul and body, for the soul naturally commands and the body obeys. The same thing is true of the soul’s powers, for the concupiscible and irascible appetites are ruled in a natural order by reason. Now all the sciences and arts are ordained to one thing, namely, to man’s perfection, which is happiness. Hence one of these sciences and arts must be the mistress of all the others, and this rightly lays claim to the name wisdom; for it is the office of the wise man to direct others. Aeterna Press

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

This book examines the question whether medieval Muslim philosophers Avicenna (Arabic Ibn Sīnā 980-1037) and Averroes (Arabic Ibn Rushd 1126-1198) are determinists. With a focus on physics and metaphysics it studies their views on chance events in nature, as well as matter, in particular prime matter, and divine providence. In addition it sets their positions against the historical/philosophical background that influenced their response, the Greco-Arabic philosophical tradition - Aristotelian and Neoplatonic - on the one hand, and the tradition of Islamic theology (kalām) on the other. In comparing their philosophical systems, it lays emphasis on the way in which Avicenna and Averroes use these traditions to offer an original answer to the problem of determinism.

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.