I would rather be super intelligent, because that barely diminishes with age, whereas looks fade much more rapidly. Which isn’t to say there aren’t good-looking older people–there are some, especially among men, who only seem to get better with age–but in the long run, I think intelligence is the better investment. Although it does have one drawback: geniuses don’t tend to have very happy personal lives. Einstein, for instance, wasn’t very good at being either a husband or a father; his mind was too occupied on his physics theories to have time to spend on relationships. So perhaps it’s better said: all things in moderation.