"A private good is ordered to the one whose good it is. In loving a private good, one is actually loving the person for whom that good is intended... A common good, on the other hand, is a good that is not diminished by being shared."

"There is nothing sinful about loving lower goods as long as they are not preferred to higher goods; sin comes about when they are loved more than the higher goods, or in a way that is not compatible with loving God above all things. A sin is mortal if a lower good is chosen in a way incompatible with loving God as the final end of one’s life"

"In every creature what is desirable is the likeness of the Creator, but every creature falls short of the infinite perfection of the creator. God alone can satisfy. He is objective happiness"

"two kinds of knowledge of God: a natural knowledge that knows God indirectly as the cause of creatures and a supernatural knowledge that will behold God directly. And so there are two kinds of elicited love of God: a natural, and a supernatural love. The supernatural love of God is a gift of grace, which perfects natural love."

"The perfection that they have is a participation, a partial sharing, in His perfection."

"All things, by desiring their own perfection, desire God Himself, inasmuch as the perfections of all things are so many similitudes of the divine being."

"The unity that belongs to the multitude of creatures is the unity of order, the harmony that binds them all together."

"The perfections that exist separately in the multitude of created things exist in a unified and more perfect manner in the God who made them."

"The goodness of creatures is a participation in the goodness of God, a partial sharing by way of likeness to God’s own goodness."

"There is nothing lacking in God. There is no division in Him, no distension of Him, no limit to Him. He is an infinite ocean of perfection, and He possesses it all at once in the eternal instant of His infinite life. There is no unrealized potential in God; He is pure act. And therefore He is infinitely and completely good. In the unspeakable happiness of the trinitarian life, God’s infinite perfection is known, expressed, loved, and given between three persons who are each the one God."