The famous 19th-century philosopher known for his concept of "will to power" is Friedrich Nietzsche. Nietzsche explored complex themes around existence, morality, and the nature of humanity. His notion of the "will to power" suggests that driving forces behind human behavior are not merely survival or reproduction but a fundamental desire to exert and enhance one's influence. Nietzsche's ideas challenged conventional morality and encouraged individuals to embrace their potential. His works, such as "Thus Spoke Zarathustra", continue to provoke philosophical discussions about the essence of life and self-actualization.