God therefore takes greater delight in His happiness, which is Himself, than other blessed ones in their happiness, which is not what they are. What is by essence, ranks above what is by participation. The divine happiness therefore exceeds all other happiness.
Perfect happiness consists in an act of the understanding.
Nor can any one understand God, the supreme object of understanding, so perfectly as He is perfect, because the being of none is so perfect as the divine being, nor can any act ever be more perfect than the substance of which it is the act. Lastly, even what another understanding does know, it does not know all with one and the same act. God therefore is incomparably happy above all other beings. The more a thing is brought to unity, the more perfect is its power and excellence. The perfection of the divine happiness may be gathered from this, that it embraces all happinesses according to the most perfect mode of each.