"In spite of the weakness of his argument, Calvin does not seem to have met anyone at Lausanne capable of contradicting him. . . . Neither in Lausanne nor in any other place later on did Calvin confront a truly worthy representative of traditional theology, or at least a theologian capable of resisting him and proving to him the solid foundation of the essential doctrines of the Catholic tradition. The absence of a worthy opponent who was at least equal if not superior to Calvin was to play an important role in the reformer's rapid and unhindered turn toward positions that were objectively heterodox."
Alexandre Ganoczy, The young Calvin, trans. David Foxgrover and Wade Provo (Philadelphia: The Westminster Press, 1987 ), 110.