Full Idea
It is generally accepted that not everything is loved, but only what is lovable; and that this is either good, or pleasant, or useful.
Gist of Idea
Only lovable things are loved, and they must be good, or pleasant, or useful
Source
Aristotle (Nicomachean Ethics [c.334 BCE], 1155b16)
Book Reference
Aristotle: 'Ethics (Nicomachean)', ed/tr. ThomsonJ A K/TredennickH [Penguin 1976], p.260
A Reaction
It needs the great analyst himself to explain to us the ingredients of love. He, of course, goes on to say that good things are the most lovable. It is hard to disagree.