It opens with a defense of philosophy as the most perfect, sublime, useful, and joyful of disciplines and identifies the "narrow" philosophy as properly Christian.
Its ninth chapter critiques Anselm by arguing that God can be proven to exist with reason, but the nature of the trinity and other aspects of God can be comprehended only through faith. It divides knowledge into three types: knowledge of God, the creatures proceeding from God, and the "ordering to an end" of those creatures. Each of those topics receives a book, while the fourth book discusses various doctrinal errors. It opens with a defense of philosophy as the most perfect, sublime, useful, and joyful of disciplines and identifies the "narrow" philosophy as properly Christian. Commissioned by Raymond of Pe?fort, it contains a four-part definition of faith and first identified Aristotelian metaphysics with Christian philosophy. FTP, name this work written to dispute certain non-Christians by the author of the Summa Theologica, Thomas Aquinas.
Its ninth chapter critiques Anselm by arguing that God can be proven to exist with reason, but the nature of the trinity and other aspects of God can be comprehended only through faith.
Summa Contra Gentiles (or Summa Against the Gentiles)