Persuasive and humane, this classic of philosophy offers Schopenhauer's fullest examination of ethical themes, articulating a descriptive form of ethics that contradicts the rationally based prescriptive theories. Starting with his polemic against Kant's ethics of duty, Schopenhauer argues that compassion forms the basis of morality, and he outlines a perspective on ethics in which passion and desire correspond to different moral characters, behaviors, and worldviews. He further defines his metaphysics of morals, employing Kant's transcendental idealism to illustrate both the interconnectiveness of being and the affinity of his ethics to Eastern thought.