These 17 lectures given in 1963 focus largely on Kant, a thinker in whose work the question of morality is most sharply contrasted with other spheres of existence. After discussing a number of the Kantian categories of moral philosophy, Theodor W. Adorno considers other, seemingly more immediate general problems, such as the nature of moral norms, the good life, and the relation of relativism and nihilism. In the course of the lectures, Adorno addresses a wide range of topics, including: theory and practice; ethics as bad conscience; the repressive character; the problem of freedom; dialectics in Kant and Hegel; the nature of reason; the moral law as a given; psychoanalysis; the element of the Absurd; freedom and law; the Protestant tradition of morality; Hamlet; self-determination; phenomenology; the concept of the will; the idea of humanity; The Wild Duck; and Nietzsche's critique of morality.