Al-Ghazzali discusses the roots of anger that will never be uprooted but how the triumph of God's Unity conceals anger, how the treatment of anger is obligatory along with the causes of anger. In addition he describes hatred and envy, the harms of envy, its true nature, the treatment for envy and how envy must be uprooted from our hearts. This is Book XXIV of Part Three of the Alchemy of Happiness entitled The Destroyers.