In the belief that the 1539 edition of Calvin's Institutes, and in particular its chapters on free choice and predestination, constituted a greater danger than did the other "Lutheran" writings, the Dutch Roman Catholic theologian Albert Pighius wrote a response entitled Ten Books on Human Free Choice and Divine Grace (1542). Calvin, when he saw Pighius's work, felt a pressing need to respond to Pighius's first six books, that is, those on free choice. The result was The Bondage and Liberation of the Will (1543). Answers Pighius's objection that preaching is unnecessary if salvation is by grace alone. An extensive historical introduction notes the value of this treatise. The Bondage and Liberation of the Will is undoubtedly the most significant of Calvin's works hitherto not translated in English. This is in striking contrast to Luther's study on the same topic, which is one of his best-known publications." This is Calvin's "fullest treatment of the relation between grace and free will, and contains important material not found elsewhere in his writings. It also contains far more discussion of the early church fathers than does any other of Calvin's works, apart from the Institutes. It is high time that this major work is made available to those whose knowledge of Calvin is confined to English translations" .