The concept, as well as the philosophical and theological consequences drawn from the purported existence of a more or less clearly defined summum bonum, could be traced back to the earliest forms of monotheism: for instance, Zoroastrianism and Judaism. In the Western world, the concept was introduced by the neoplatonic philosophers, and described as a feature of the Christian God by Saint Augustine in De natura boni (On the Nature of Good, written circa 399). Augustine denies the positive existence of absolute evil, describing a world with God as the supreme good at the center, and defining different grades of evil as different stages of remoteness from that center.
Experience soon teaches that all desires cannot be satisfied, that they are conflicting, and that some goods must be foregone in order to secure others. Hence the necessity of weighing the relative value of goods, of classifying them, and of ascertaining which of them must be procured at the loss of others. The result is the division of goods into two great classes, the physical and the moral, happiness and virtue. Within either class it is comparatively easy to determine the relation of particular good things to one another, but it has proved far more difficult to fix the relative excellence of the two classes of virtue and happiness. If happiness and virtue are mutually exclusive, we have to choose between the two, and this choice is a momentous one. But their incompatibility may be only on the surface. Indeed the hope is ever recurring that the sovereign good includes both, and that there is some way of reconciling them.