Friedrich Wilhelm Nietzsche (15 October 1844 - 25 August 1900) was a German philologist, philosopher, cultural critic, poet and composer. He wrote several critical texts on religion, morality, contemporary culture, philosophy and science, displaying a fondness for metaphor, irony and aphorism.Nietzsche's key ideas include perspectivism, the Will to Power, the "death of God", the übermensch and eternal recurrence. One of the key tenets of his philosophy is the concept of "life-affirmation," which embraces the realities of the world in which we live over the idea of a world beyond. It further champions the creative powers of the individual to strive beyond social, cultural, and moral contexts.