  Rousseau then spent a brief period training to become a Catholic priest before embarking on another brief career as an itinerant musician, music copyist and teacher. In 1731 he returned to Mme de Warens at Chambéry and later briefly became her lover and then her household manager. Rousseau remained with Mme de Warens through the rest of the 1730s, moving to Lyon in 1740 to take up a position as a tutor. This appointment brought him within the orbit of both Condillac and d’Alembert and was his first contact with major figures of the French Enlightenment. In 1742 he travelled to Paris, having devised a plan for a new numerically-based system of musical notation which he presented to the Academy of Sciences. The system was rejected by the Academy, but in this period Rousseau met Denis Diderot. A brief spell as secretary to the French Ambassador in Venice followed before Rousseau moved to Paris on a more permanent basis from 1744, where he continued to work mainly on music and began to write contributions to the Encyclopédie of Diderot and d’Alembert.