Schopenhauer's will to live ("Wille zum Leben") thus became a subsidiary to the will to power, which is the stronger will. Nietzsche thinks his notion of the will to power is far more useful than Schopenhauer's will to live for explaining various events, especially human behavior—for example, Nietzsche uses the will to power to explain both ascetic, life-denying impulses and strong, life-affirming impulses in the European tradition, as well as both master and slave morality. He also finds the will to power to offer much richer explanations than utilitarianism's notion that all people really want to be happy, or the Platonist's notion that people want to be unified with the Good.