He possessed a collection of books of ancient source .
During 1646 Leibniz was vice chairman of the faculty of philosophy and also was Professor of Moral Philosophy at the University of Leipzig , in addition to employment as actuary .
Leibniz possessed a collection of books of ancient source .
During 1646 Leibniz was vice chairman of the faculty of philosophy and also was Professor of Moral Philosophy at the University of Leipzig , in addition to employment as actuary .