Ghazali here presents definitions for patience and its different forms; the need for patience; the degrees of patience; and why patience is considered to be half of faith. In this new edition, the Islamic Texts Society has included a translation of Imam Ghazali’s own Introduction to the Revival of the Religious Sciences which gives the reasons that caused him to write the work, the structure of the whole of the Revival, and places each of the chapters in the context of the others.