What is "grace"? It is God's own life, shared by us. God's life is love. Deus caritas est. By grace we are able to share in the infinitely selfless love of Him Who is such pure actuality that He needs nothing and therefore cannot conceivably exploit anything for selfish ends. Indeed, outside of Him there is nothing, and whatever exists exists by His free gift of its being, so that one of the notions that is absolutely contradictory to the perfection of God is selfishness.

Author: Thomas Merton