The influential German philosopher associated with existentialism is Friedrich Nietzsche. Often regarded as a precursor to existentialist thought, Nietzsche challenged traditional philosophical ideals and emphasized the individual's subjective experience and personal responsibility. His ideas about the "Will to Power," the "Übermensch," and the concept of eternal recurrence deeply influenced later existentialist thinkers like Jean-Paul Sartre and Martin Heidegger. Nietzsche's critique of morality, religion, and societal norms encouraged individuals to seek authenticity and create their own values. His works, such as "Thus Spoke Zarathustra" and "Beyond Good and Evil," explore profound questions of existence, making him a pivotal figure in modern philosophical discourse.