 In the 1740s, poor and still marginal, Diderot began to build the career as a writer and intellectual that would make him famous. In 1742, he met the young Jean-Jacques Rousseau, a key moment in the genesis of the philosophe movement, which Rousseau immortalized for posterity in his Confessions. Etienne Bonnot de Condillac also joined their circle at this time. Diderot further began to write and publish his own books in this period, establishing his name and reputation as a philosophical author, one who was perennially associated with the most radical and controversial ideas.