"On the Basis of Morality" (from 1840) is one of Arthur Schopenhauer's significant works in ethics. In this treatise, he argues that morality stems from compassion. He starts his work with criticism of Kant's Groundwork of the Metaphysic of Morals, which Schopenhauer considered the clearest explanation of Kant's foundation of ethics. He continues with a positive construction of his own ethical theory and concludes the book with a brief description of the metaphysical foundations of ethics.