The most influential Sufi poem ever written, the six books of the Masnavi are often called "the Qur'an in Persian." Book Two is concerned with the challenges facing the seeker of Sufi enlightenment. In particular it focuses on the struggle against the self, and how to choose the right companions in order to progress along the mystical path. By interweaving amusing stories and profound homilies, Rumi instructs his readers in a style that still speaks...