"The infinite is inconsistent with any end, while good bears the character of an end." It may be urged that end does not bear the same sense in both these propositions. In the former it means limit (peras): in the latter it means, end in view, the perfection that crowns growth and effort (telos). The answer is that the infinite is inconsistent with any end, if infinity has to be traversed before that end is reached: for infinity is untraversable.
Of God and His Creatures: 1.38