Al-Ghazali's Kitab adab al-'uzla (The Properties of Retreat) is the sixth book in the Rub' al-'adat (Quarter of Customary Practices) in his monumental work known as Ihya' 'ulum al-din (Revival of the Religious Sciences). Focusing on the issue of seclusion, or retreat from society, the main discussion in this book is the question of whether it is better to engage in social intercourse (al-mukhalata) or remove oneself from society to focus on perfecting one's relation to God. As he addresses this issue, al-Ghazali takes us through the numerous benefits and dangers of seclusion while laying out...