Their creeds, however, were in many respects opposite. Where one discovered only confirmations of his faith, the other could find nothing but reasons for doubt. Moral necessity, and calvinistic inspiration, were the props on which my brother thought proper to repose. Pleyel was the champion on intellectual liberty, and rejected all guidance but that of his reason. Their discussions were frequent , but, being managed with candour as well as with skill, they were always listened to by us with avidity and benefit.