"James W. Sire explains the basics of Christian theism, deism, naturalism, nihilism, existentialism, Eastern pantheistic monism, New Age philosophy and postmodernism. In an increasingly pluralistic academic environment, the ability to understand and evaluate various worldviews is vitally important." This new edition includes updates throughout. But most significantly, it reflects refinements in Sire's definition and thinking about the nature of worldviews themselves, which are taken up in greater detail in the companion volume, Naming the Elephant: Worldview as a Concept.