God is good, and is His own goodness; He is the good of every good.
 Bertrand Russell, A History of Western Philosophy (1945). copy citation

Context

“He is not in any genus; He cannot be defined. But He lacks not the excellence of any genus. Things are in some ways like God, in others not. It is more fitting to say that things are like God than that God is like things. God is good, and is His own goodness; He is the good of every good. He is intelligent, and His act of intelligence is His essence. He understands by His essence, and understands Himself perfectly. (John the Scot, it will be remembered, thought otherwise.) Although there is no composition in the divine intellect, God understands many things.” source