The Book of Ceremonial Magic is famous as one of the first attempts to document various famous grimoires and other magic texts. In this work, Waite pays much attention to the history of magic texts, refuting many of their legends. He also raises a question of the relations between magic and theology. He discusses these issues in particular examples, like raising the question of why good angels would be summoned to kill an enemy. Another merit of this work is synthesizing many famous grimoires into one system.