I guess both Nabokov and Popper had, in different ways, immunized me against the fashion for French-influenced literary theory in the '70s, '80s, and '90s - "immunized" in the sense that they made me no longer susceptible to this epidemic cultural virus. I looked into Derrida and found that he rarely seemed to be interested in truth; he was more interested in making a splash.

I think like almost everything in evolution, the old forms persist. New forms come along - not always, of course; there are species and whole lineages that go extinct - but basically novels and plays, and so on, will continue to exist. Jokes, as the lowest-cost form of narrative, will certainly continue to exist. They're a bit like microbes in the biological world. They're low-cost and they're everywhere. They're the most successful form of life, even though they're not the ones we think about most.

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.

Any artist who really engages with the problems in their medium at that moment and tries to deepen the problems is likely to discover new problems, new possibilities that will excite audiences and continue to excite them.

I think that's an important part of art in general. Especially in literature, in stories, we play with eventualities that may put us through a lot of intense negative feelings - say, in horror films or tragedies as intense as King Lear - but we come out feeling richer. We've lived to the fullest, we've tested ourselves in these environments.

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.

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.