Étienne Gilson said this quote

What a man finds circa se or sub se is overwhelming in amount, what he finds in se is embarassing in its obscurity, but when from his own being he would obtain light as to what is supra se, then indeed he finds himself face to face with a dark and somewhat terrifying mystery. The trouble is that he is himself involved in the mystery. If, in any true sense, man is an image of God, how should he know himself without knowing God? But if it is really of God that he is an image, how should he know himself?

~ Étienne Gilson

God creates, not that there may be witnesses to render Him His due glory, but beings who shall rejoice in it as He rejoices in it Himself and who, participating in His being, participate at the same time in His beatitude. It is not therefore for Himself, but for us, that God seeks His glory; it is not to gain it, for He posses it already, nor to increase it, for already it is perfect, but to communicate it to us.

~ Étienne Gilson

When he [Malevranche] happened to find Descartes' book entitled Man in a book shop on the rue Saint Jaques, he leafed through it, bought it and read it with so much pleasure that he was forced at times to interrupt his reading, so loud were the beatings of his heart due to the extreme pleasure he had in doing so. Those who never put down a book of erudition, science or philosophy, to catch their breath, so to speak, and recover from the strong emotion they experience, certainly ignore of of the most exquisite pleasures of intellectual life.

~ Étienne Gilson

Just as it is by His goodness that God gives being to beings, so also it is by His goodness that He makes causes to be causes, thus delegating to them a certain participation in His actuality. Or rather, since causality flows from actuality, let us say that He confers the one in conferring the other, so that to the Christian mind the physical world in which we live offers a face which is the reverse of its physicism itself, a face where all that was read on the one side in terms of force, energy and law, is now read, on the other in terms of participations and analogies of the Divine Being. The Christian world takes on the character of a sacred world with a relation to God inscribed in its very being and every law that rules its functioning.

~ Étienne Gilson