An informative and accessible guide to all of the great philosophers’ best-known theories, explained through their most famous quotes. We may have heard of Socrates, Plato, Descartes and Nietzsche, but what did they believe? What were their famous aphorisms? And what did these actually mean? This Book Will Make You Think: Philosophical Quotes and What They Mean explains as simply as possible the ideas behind the world's most highly regarded philosophers, examining their beliefs and presenting choice quotes that succinctly distil their most famous theories, such as:   No man’s knowledge here can go beyond his experience. —Locke If God did not exist, it would be necessary to invent him. —Voltaire Whereof one cannot speak thereof one must be silent. —Wittgenstein Written in an accessible and informative style, this book will help readers get to grips with the complex concepts of philosophy through the ages, and help match the theories to the names.