Norman Kretzmann expounds and criticizes St. Thomas Aquinas's natural theology of creation, which is `natural' (or philosophical) in virtue of Aquinas's having developed it without depending on the data of Scripture. The Metaphysics of Creation is a continuation of the project Kretzmann began in The Metaphysics of Theism, moving the focus from the first to the second book of Aquinas's Summa contra gentiles.