At twenty-five years of age, now a splendid classical scholar, radiant with faith and hope and the vision of a new age for humanity which the recovered gospel was to bring in, Castellio went to Strasbourg to share the task of the Reformers and to put his life into the new movement. Calvin, then living in Strasbourg, received the brilliant recruit with joy and took him into his own home. When the great Reformer returned to Geneva in 1541 to take up the mighty task of his life he summoned Castellio to help him, and made him Principal of the College of Geneva, which Calvin planned to make one of the {90} foremost seats of Greek learning and one of the most illuminating centres for the study of the Scriptures. The young scholar's career seemed assured. He had the friendship of Calvin, he was head of an important institution of learning, the opportunity for creative literary work was opening before him, and he was aspiring soon to fulfil the clearest call of his life--to become a minister of the new gospel. His first contribution to religious literature was his volume of "Sacred Dialogues," a series of vivid scenes out of the Old and New Testaments, told in dialogue fashion, both in Latin and French.[2] They were to serve a double purpose: first, to teach French boys to read Latin, and secondly, to form in them a love for the great characters of the Bible and an appreciation of its lofty message of life. The stories were really good stories, simple enough for children, and yet freighted with a depth of meaning which made them suitable for mature minds. Their success was extraordinary, and their fine quality was almost universally recognized. They went through twenty-eight editions in their author's lifetime, and they were translated into many languages.[3] His bent toward a religion of a deeply ethical and spiritual type already appears in this early work, and here he announces a principle that was to rule his later life and was to cost him much suffering: "The friend of Truth obeys not the multitude _but the Truth_."