Friedrich Nietzsche (1844-1900) was a German philosopher, cultural critic, and writer whose work has had a profound influence on modern philosophy, literature, and intellectual history. Known for his bold critiques of traditional morality, religion, and culture, Nietzsche developed ideas such as the will to power, the Übermensch, and the concept of eternal recurrence. His works, including Thus Spake Zarathustra, Beyond Good and Evil, and The Genealogy of Morals, continue to shape contemporary thought across philosophy, psychology, and the arts.