was eternal or actually began at some point in time. Rather, only divine revelation from the Book of Genesis proves that. All statements about God are either analogical or metaphorical: one cannot say man is "good" in exactly the same sense as God, but rather that he imitates in some way the simple nature of God in being good, just, or wise. 'Unbelief' is the worst sin in the realm of morals. The principles of just war and natural law The greatest happiness of all, the ultimate good, consists in the beatific vision. Collecting interest on loans is forbidden, because it is charging people twice for the same thing. In and of itself, selling a thing for more or less than what it is worth is unlawful (the just price theory). The contemplative life is greater than the active life. What is even greater is the contemplative life that takes action to call others to the contemplative life and give them the fruits of contemplation. (This actually was the lifestyle of the Dominican friars, of which St. Thomas was a member.) Both monks and bishops are in a state of perfection. Being a monk is greater than being married and even greater (in many ways) than being a priest, but it is not as good as being a bishop. Although the Jews delivered Christ to die, it was the Gentiles who killed him, foreshadowing how salvation would begin with the Jews and spread to the Gentiles. After the end of the world (in which all living material will be destroyed), the world will be composed of non-living matter (e.g. rocks), but it will be illuminated or enhanced in beauty by the fires of the apocalypse; a new heaven and earth will be established. Martyrs, teachers of the faith (doctors), and virgins, in that order, receive special crowns in heaven for their achievements. "The physicist proves the Earth to be round by one means, the astronomer by another: for the latter proves this by means of mathematics, e. g. by the shapes of eclipses, or something of the sort; while the former proves it by means of physics, e. g. by the movement of heavy bodies towards the center." Part I: Theology The first part of the Summa is summed up in the premise that God governs the world as the "universal first cause". God sways the intellect; he gives the