Upon this view of human nature and the human lot Charron founds his moral system.
- Democritus's moral system - the first collection of ethical precepts which deserves the name - strongly resembles the negative side of the system of Epicurus.
Regarding the body as the work of the evil deity, the Cerdonians formed a moral system of great severity, prohibiting marriage, wine and the eating of flesh, and advocating fasting and other austerities.
Adam Smith gives authority to his moral system by saying ' In earlier editions of the Inquiry Hume expressly included all approved qualities under the general notion of " virtue."
This work is a severe criticism of all previous moral systems, especially those of Kant and Fichte, Plato's and Spinoza's finding most favour; its leading principles are that the tests of the soundness of a moral system are the completeness of its view of the laws and ends of human life as a whole and the harmonious arrangement of its subject-matter under one fundamental principle; and, though it is almost exclusively critical and negative, the book announces clearly the division and scope of moral science which Schleiermacher subsequently adopted, attaching prime importance to a "Giiterlehre," or doctrine of the ends to be obtained by moral action.