Philosophy : 50 in 500 unravels its most central concepts through five tightly focused chapters. From metaphysics to modern economic theories, from grou ndbreaking advances inspired in psychology to its relationship with postmodernist theory, this book examines the greatest ide as from the greatest thinkers humankind has ever known . Arguments on topics as diverse as the right s of man and the origins of the species, and the existence of God and the concept of the Ego , are considered in this book which combines history with contemporary culture in a celebration of the most important thoughts on “life,libert y and the pursuit of happiness”