Pleasure's fun. It's great, but you can't keep it going forever; just accept the fact that it's here and it's gone, and maybe then again, it will come back, and you'll get to do it again. Joy lasts forever. Pleasure is purely self-centered. It's all about your pleasure: it's about you. It's a selfish, self-centered emotion, that is created by a self-centered motive of greed. Joy is compassion. Joy is giving yourself to somebody else, or something else. And it's a kind of thing that is, in its subtlety and lowness, much more powerful than pleasure. You get hung up on pleasure; you're doomed. If you pursue joy; you will find everlasting happiness.

Academy of Achievement speech

George Lucas Inspirational Speech - Creator of Star Wars