(1712-78) a French writer and philosopher, born in Switzerland, whose book The Social Contract developed the idea that governments must always work according to the wishes of the people. His work had a great influence on the French Revolution, and he invented the phrase, "Liberty, Equality, Fraternity", which was later used by people who supported the Revolution. He also wrote about the noble savage.
Definition from the Longman Dictionary of Contemporary English Advanced Learner's Dictionary.
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