This theory, first hinted by John Locke, was later expounded by Rousseau And it became the slogan of the French Revolution. According to Rousseau the State came into existence by explicit or tacit agreement. Explicitly, people said, "We want to be a State, a community." For Rousseau the State and the people were one. Having created the State, the people ought to control it and change it as they pleased, for whenever an individual decided that be belonged to a people. he already had decided that his people should be sovereign and that, being sovereign, they should run their own affairs. This is the doctrine of popular sovereignty.