The New Believers: Sects, 'Cults' and Alternative Religions	An enlightening survey of beliefs. Comprehensive, recommended reference work.
	The True Believer: Thoughts on the Nature of Mass Movements (Perennial Classic.)	Eric Hoffer's classic on the nature of mass movements. Understand the true believers.
	Evil in Modern Thought: An Alternative History of Philosophy	Study of changes in our understanding of evil from the Book of Job through the 1755 Lisbon earthquake, to the Holocaust of WWII and 9/11.
	Escape from Freedom	A social psychology useful for explaining totalitarianism and other authoritarian movements when the leader is right, even when he's wrong.
	The Story of Civilization (11 Volume Set)	Will and Ariel Durant's The Story of Civilization and lessons of history.
	The Art of Loving	Love in all its aspects.