It is true that the genius of assembled men or of peoples is quite different from a man's character in private, and that one would know the human heart very imperfectly if he did not examine it also in the multitude. But it is no less true that one must begin by studying man in order to judge men, and that he who knew each individual's inclinations perfectly could foresee all their effects when combined in the body of the people.

Moreover Rousseau advocated the opinion that insofar as they lead people to virtue all religions are equally worthy and that people should therefore conform to the religion in which they have been brought up. Following the French Revolution other commentators fingered a potential danger of Rousseau’s project of realizing an “antique” conception of virtue amongst the citizenry in a modern world (e. Although in this state he deprives himself of some advantages which he got from nature he gains in return others so great his faculties are so stimulated and developed his ideas so extended his feelings so ennobled and his whole soul so uplifted that did not the abuses of this new condition often degrade him below that which he left he would be bound to bless continually the happy moment which took him from it for ever and instead of a stupid and unimaginative animal made him an intelligent being and a man.

Rousseau's novel Émile: or On Education is a treatise on the education of the whole person for citizenship. His sentimental novel Julie or the New Heloise was of importance to the development of pre-romanticism and romanticism in fiction. Rousseau's autobiographical writings—his Confessions which initiated the modern autobiography and his Reveries of a Solitary Walker—exemplified the late 18th-century movement known as the Age of Sensibility and featured an increased focus on subjectivity and introspection that later characterized modern writing.