Jean-Jacques Rousseau was born in Geneva, in the 28th of June 1712, and died the 2nd of July 1778. His life was not quiet, mixed with botherings of several wanderings, that took him to cross a considerable part of Europe, the suffering of incomprehension and persecution: Geneva, that nowadays honors him as a son, closed it''s doors on him and burned his books. Poet, musician and philosopher, Rousseau came to posterity as the defender of man''s natural kindness, that is ruined by society''s vices. But, when rereading its workmanship - where the New Heloísa, Emilio and The Social Contract shine -, we understand the judgment of Goethe when writing about him: “With Voltaire, it is the old world that finishes; with Rousseau, it is the new world that starts.”