How Likeness to God may be found in Creatures

EFFECTS disproportionate to their causes do not agree with them in name and essence. And yet some likeness must be found between such effects and their causes: for it is of the nature of an agent to do something like itself. Thus also God gives to creatures all their perfections; and thereby He has with all creatures a likeness, and an unlikeness at the same time. For this point of likeness, however, it is more proper to say that the creature is like God than that God is like the creature. For that is said to be like a thing, which possesses its quality or form. Since then that which is found to perfection in God is found in other beings by some manner of imperfect participation, the said point of likeness belongs to God absolutely, but not so to the creature. And thus the creature has what belongs to God, and is rightly said to be like to God: but it cannot be said that God has what belongs to the creature, nor is it fitting to say that God is like the creature; as we do not say that a man is like his picture, and yet his picture is rightly pronounced to be like him.

1.28 : That God is Universal Perfection
1.30 : What Names can be predicated of God