Summa Contra GentilesBook One of the Summa Contra Gentiles series studies God's existence, nature, and substance, his perfect actuality, the autonomy of his knowledge, the independence of his will, the perfection of his life, and the generosity of his love. The Summa Contra Gentiles is not merely the only complete summary of Christian doctrine that St. Thomas has written, but also a creative and even revolutionary work of Christian apologetics composed at the precise