The significance of Friedrich Nietzsche for twentieth century culture is now no longer a matter of dispute. He was quite simply one of the most influential of modern thinkers. The opening essay of this Companion provides a chronologically organised introduction to and summary of Nietzsche's published works, while also providing an overview of their basic themes and concerns. It is followed by three essays on the appropriation and misappropriation of his writings, and a group of essays exploring the nature of Nietzsche's philosophy and its relation to the modern and post-modern world. The final contributions consider Nietzsche's influence on the twentieth century in Europe, the USA, and Asia. New readers and non-specialists will find this the most convenient, accessible guide to Nietzsche currently available. Advanced students and specialists will find a conspectus of recent developments in the interpretation of Nietzsche.