Throughout history, some books have changed the world. They have transformed the way we see ourselves - and each other. They have inspired debate, dissent, war and revolution. They have enlightened, outraged, provoked and comforted. They have enriched lives - and destroyed them. Now Penguin brings you the works of the great thinkers, pioneers, radicals and visionaries whose ideas shook civilization and helped make us who we are. Elegant, insightful and startlingly modern, the philosophy of Lucretius deeply influenced the course of European thought; here, he provides one of the first accounts of atomic theory, argues that there can be no life of the soul after death, and explores the sickness that we call love.