The book is a history and overview of Islamic philosophy covering its origins in the 9th century to the modern era.

[2][3] The book presents a narrative of the development of philosophy in the Islamic world, and its relationship with revelation and holy matter.

[6][7][8] The book is the result of about fifty years of the author's study and reflection of philosophy and philosophical issues.

In particular, metaphysics in Islamic philosophy is discussed, including Martin Heidegger's opinion that returning to being is the way to salvation.

[18][19][12][20] Academic reviews have been generally positive, commending its comprehensiveness and detail, particularly of Islamic philosophers and schools of thought that have remained obscure in Western discourse.