An accessible, engaging, and fully illustrated guide to the most profound and influential ideas in the history of philosophy. Philosophy explores the deepest, most fundamental questions of life. This guide presents 250 of the most important theories, events, and seminal publications in the field over the last 3,500 years. The concise yet informative entries cover a range of topics and cultures, from the Hindu Vedas and Plato's theory of forms to Ockham's Razor, Pascal's Wager, Hume's A Treatise of Human Nature, existentialism, feminism, Philosophical Zombies, and the Triple Theory of Ethics. Beautifully illustrated and filled with unexpected insights, The Philosophy Book is a treasure trove of the world's wisdom.