This book was originally written by the great Muslim thinker and reformer Ayatullah Murtada Mutahhari on Mysticism for B.A. students at the faculty of theology of the University of Tehran. The original book was published after Mutahhari's martyrdom. A succinct yet deep exposition of the principles of Islamic theology is discussed such as a brief history of ʻilm al kalām and its various schools (Shiʻites, Muʻtazilites...