Friedrich Nietzsche was a German philosopher and cultural critic born on October 15, 1844, who profoundly influenced Western philosophy through his ideas on the 'will to power,' the concept of truth as perspective, and critiques of morality, particularly Christianity. He asserted that 'God is dead,' symbolizing the end of metaphysical ethics and prompting a reevaluation of human values, advocating for a shift from 'slave morality' to 'master morality.' Nietzsche's work reflects a struggle against nihilism, promoting the development of the 'Übermensch' as a new pinnacle of human evolution and existence.