Everything is humanities. The sciences are a form of the humanities. They involve traditions of inquiry; they involve social engagement with ideas. They do not happen with a naked brain going out and encountering a nonhuman world. And the better we understand ourselves, the better we can do science, as well. So I don't see them - the sciences and the humanities - as being at all different.

Scientists, to give them credit, do not think of the humanities in a negative way. It's the bureaucrats who want to cut costs who think, Well, here's something that's not booming at the moment, let's slash it.

Literature and the other arts play with pattern - our brains understand our world by recognizing patterns - and with possibility. The arts harness our sharpest senses, sight and sound, and our richest ways of understanding, in language and narrative. They were our first schools before schools were ever invented. They develop our imaginations, extend our possibilities, and deepen what we can all share.

There is behavioral ecology, which looks closely at the difference different ecologies make to behavior and other features of animals and humans. There's evolutionary individual psychology, there's evolutionary social psychology. In Darwin's terms, evolution couldn't exist without variation, and variation is important in behavioral genetics. And so on, and so on. There are so many instances in which evolution actually sharpens the precision, I think, with which one can find out the importance of differences. We're interested in differences as well as commonalities.

If an artwork never gets any attention from anybody, then obviously it's got problems. If it gains attention from a very small elite, then it's presumably doing something. Finnegans Wake gets a lot of attention from certain people who become passionate about it, who are usually very good readers in general. Although - I often talk about costs and benefits - it seems to me the costs of reading Finnegans Wake are not worth the benefits, however many there may be. And it's the same with the more arcane among poets, Zukofsky and so on.

Popper and Nabokov are very different people in some ways - and I'm ready to devote large chunks of my life to both of them. Popper didn't think much of words but thought ideas mattered, and Nabokov didn't think much of ideas, but words mattered, and so on. But both of them had a sense that this is a world of infinite discovery, unending discovery. That quest to discover more in any direction is what I think drives me, and what drives humans, when they're doing the most interesting things.

I would be very surprised if on another planet we discovered a species as intelligent as humans that didn't have narrative, or didn't have art in general.