Leyden, and there is more than one Genevese writer who deserves a place in the history of the transition in the beginning of the eighteenth century from theology proper to that metaphysical theology, which was the first marked dissolvent of dogma within the Protestant bodies. To this general movement of the epoch, of course, Descartes supplied the first impulse. The leader of the movement in Geneva, that is of an attempt to pacify the Christian churches on the basis of some such Deism as was shortly to find its passionate expression in the Savoyard Vicar's Confession of Faith, was John Alphonse Turretini (1661-1737). He belonged to a family of Italian refugees from Lucca, and his grandfather had been sent on a mission to Holland for aid in defence of Geneva against Catholic Savoy. He went on his travels in 1692; he visited Holland, where he saw Bayle, and England, where he saw Newton, and France, where he saw Bossuet. Chouet initiated him into the mysteries of Descartes. All this bore fruit when he returned home, and his eloquent exposition of rationalistic ideas aroused the usual cry of heresy from the people who justly insist that Deism is not Christianity. There was much stir for many years, but he succeeded in holding his own and in finding many considerable followers.[243] For example, some three years or so after his death, a work appeared in Geneva under the title of _La Religion Essentielle a l'Homme_, showing that faith in the existence of a God suffices, and treating with contempt the belief in the inspiration of the Gospels.[244]