This book introduces the work of an important medieval Islamic philosopher who is little known outside the Persian world. Afdal al-Din Kashani was a contemporary of a number of important Muslim thinkers, including Averroes and Ibn al-Arabi. Kashani did not write for advanced students of philosophy but rather for beginners. In the main body of his work, he offers especially clear and insightful expositions of various philosophical positions, making him an invaluable resource for those who would like to learn the basic principles and arguments of this philosophical tradition but do not have a strong background in philosophy. Here, Chittick uses Kashani and his work to introduce the basic issues and arguments of Islamic philosophy to modern readers.