On the Basis of Morality (German: Ueber die Grundlage der Moral, 1840) is one of Arthur Schopenhauer"s major works in ethics, in which he argues that morality stems from compassion. Schopenhauer begins with a criticism of Kant"s Groundwork of the Metaphysic of Morals, which Schopenhauer considered to be the clearest explanation of Kant"s foundation of ethics.