He was not of those who are silent on what they believe. Listeners flocked round him, and the solitude he loved became impossible for him. “As for me,” he says again, in the preface to his commentary on the Psalms, “inasmuch as being naturally diffident and retiring I have always preferred repose and tranquillity; I began to seek for some hiding-place, and means of withdrawing myself from the world; but so far from obtaining my wish, every retreat and every secluded spot were to me so many public schools.” Calvin comprehended that his time and his powers were no longer his own. He preached in the secret meetings at Bourges and at Paris. Theodore de Bèze says: “He advanced wonderfully the cause of God in many families, teaching the truth not with an affected language, to which he was always opposed, but with a depth of knowledge and so much gravity of speech, that no man heard him without being filled with admiration.”[15] He was at that time twenty-four years of age. A discourse which he composed, in 1533, for the rector of the university of Paris, and which was condemned for heresy by the Sorbonne, compelled him to fly. It is said that he escaped by a window, a few moments before the serjeants broke into his chamber. He withdrew, under the name of Charles d’Espeville, to Angoulême, and was received into the house of the canon Louis du Tillet, where he had a rich library at his service. He was already occupied with his great work on the Christian religion, and laboured upon it with such ardour that he frequently passed nights without sleeping, and days without eating. When he had finished a chapter, he read it to his friends; and on opening the manuscript, he was wont to say: “Let us find the truth.” He sowed the doctrines of the Reformation in Poitou and Saintonge, publicly when he could, secretly when persecution was too violent. There is still shown near Poitiers an excavation to which popular tradition gives the name of _Calvin’s cave_. When there one day with several of his disciples, one of them represented that there must be truth in the sacrifice of the Mass, since it was celebrated in every place in Christendom. “My mass is there,” replied Calvin, pointing to the Bible. Then throwing down upon the table his cap, and raising his eyes to heaven, he exclaimed: “O Lord, if on the day of judgment Thou reprehendest me for that I have been to Mass and that I have deserted it, I will say to Thee with reason: Lord, Thou hast not bidden me to it. There is Thy law; there is the Scripture Thou hast given me, in the which I have found no other sacrifice than Thy immolation on the altar of the cross.”