As in the first two books of Summa Contra Gentiles, in Book Three St. Thomas continues to expound and defend the truths of the Catholic faith by means of reason and to judge other world views in the light of reason. He considers especially the end and purpose of creation and particularly the end of man the providence of God over all things. Book Three has three main divisions God as the end and good of all things; God's general government of things; providence and rational things. It is in this Book that the famous discussion of the end of man (including the section on man's desire for the vision of God) is found. Here, too, is St. Thomas treatment of moral problems under the precepts and counsels of Divine Law.