Taking the Bastile

Pitou lost his mother when he was small. He was raised by a stern aunt who did not really love him. He starts knowing the world by going to service. How can this man, Pitou the Peasant (as the subtitle of the novel suggests) go on to influence the whole state? How can he go on and take a part in the French revolution? Can his motivation, coming from what he did not have, be enough?