Proslogium and Monologium/Monologium/Chapter51
Chapter LI edit
Each loves himself and the other with equal love.
But if the supreme Spirit loves himself, no doubt the Father loves himself, the Son loves himself, and the one the other; since the Father separately is the supreme Spirit, and the Son separately is the supreme Spirit, and both at once one Spirit. And, since each equally remembers himself and the other, and conceives equally of himself and the other; and since what is loved, or loves in the Father, or in the Son, is altogether the same, necessarily each loves himself and the other with an equal love.