Al-Ghazzali discusses the virtues of patience and gratitude in great detail using examples from the Quran and the Traditions (ahadith). Patience is considered to be half of faith and is necessary at all times in all situations according to al-Ghazzali. He explains how one can gain patience. In regard to the virtue of gratitude, he explores its opposite of ingratitude, the true nature of blessings, how knowledge is good and ignorance is evil and blessings and their various degrees. This is Book XXXII of Part Four of the Alchemy of Happiness entitled The Deliverers.