An introduction to Friedrich Nietzsche's life and philosophy, taken from Paul Strathern's "Nietzsche in 90 Minutes". Strathern's book, part of a series on philosophers, offers a concise overview of Nietzsche's ideas, including his concept of the Will to Power, his pronouncement that "God is dead", and his notions of the Eternal Recurrence and the Übermensch (Superman). The excerpt also covers Nietzsche's biography, his relationship with Richard Wagner, and the misinterpretations of his work by later groups. Finally, it includes key philosophical concepts, notable quotes, and chronological timelines.