Renan, educated by priests, was to accept the scientific ideal with an extraordinary expansion of all his faculties. He became ravished by the splendor of the cosmos. At the end of his life, he wrote of Amiel, "The man who has time to keep a private diary has never understood the immensity of the universe." The certitudes of physical and natural science were revealed to Renan in 1846 by the chemist Marcellin Berthelot, then a boy of eighteen, his pupil at M. Crouzet's school. To the day of Renan's death, their friendship continued. Renan was occupied as usher only during evenings. During the daytime, he continued his researches in Semitic philology. In 1847, he obtained the Volney prize, one of the principal distinctions awarded by the Academy of Inscriptions, for the manuscript of his "General History of Semitic Languages." In 1847, he took his degree as "Agrégé de Philosophie" – that is to say, fellow of the university – and was offered a job as master in the "lycée" Vendôme.