The attributes of God derive their infinite beauty from their relationship to each other. Just as in paintings it is not the isolated color or shape or texture that is beautiful but rather their relationship with each other, their proportion and interplay; so it is with persons and ultimately with the person of God. It is the peculiar proportionality and interplay and harmony of all God's attributes (together with their infiniteness and eternality) that constitutes God's beauty, and makes Him the foundation of all the beauty in the world.
