 Here the youth devoted himself to the study of secular sciences to which he had already seriously applied himself during his Talmudic studies.Having obtained the rather unwilling permission of his father, in 1812 he went to Paris, where he received a call to a prominent position in the Central Jewish Consistory and at the same time fulfilled the duties of tutor for the children of Baruch Weil.The results of his method of teaching induced the Catholic families of Louis Mertien and Bernard Mertien to entrust their children to his care.