I love you, I love you not

[Blasted Child]

I think it's more interesting to see how these two qualities cooperate/interfere with eachother than to separate them and grade them.
On a very basic level, you need a certain amount of intelligence to interpret other people's reactions and emotional patterns, and first then can you be empathic.
You can of course have compassion to the extent that you'll say "I'd better not kick him, since that would probably hurt him the way it'd hurt me", but unless you can bring compassion to a level of more profound psychology, it'll remain virtually useless in a complex social environment.
I know of stupid people who regularly hurt eachother, not because they want to, but because they don't understand the subtler ways in which humans can be hurt, and they can't foresee long term consequences.
I think intelligence is sometimes frowned upon because we link it with evil professors, nuclear bombs and psychopaths, and believe that the only force to counteract all these abominations is some sort of holy notion of compassion.

Do you believe that he who built the nuclear bomb was completely devoid of compassion?