I would like to write a play which doesn’t disappoint me 20 years later.

Oh God, there are so many beautiful things in the world which I will have to leave when I die but I'm ready, I'm ready, I'm ready. ... And I don't know whether I'll do another book or not. I might. It doesn't matter. I'm a happy old man. But I will cry my way all the way to the grave.

On the contrary, I feel intensely alive, and I want and hope in the time that remains to deepen my friendships, to say farewell to those I love, to write more, to travel if I have the strength, to achieve new levels of understanding and insight. This will involve audacity, clarity and plain speaking; trying to straighten my accounts with the world. But there will be time, too, for some fun (and even some silliness, as well).

Unfortunately I have too many projects going. Two of them, fortunately, are already in the editors’ hands. One is this book on the birds of Northern Melanesia I’m doing with Jared Diamond, and that deals with speciation and particular ecology, biogeographic dispersal and all the other questions.

Writing about how much you love your wife is bad form, it seems like boasting

My very wise and politically savvy 17-year-old daughter says I get too emotional about political issues. I think she’s right. She knows that if she sees me race across a room, I have just read something about Trump. Turning ideas into feelings is the thing an essayist is supposed to do, but political punditry should probably be more detached.

I’ve been devoting a lot of my time in the last five years to musical theater. It’s been my new passion. I’d love to write a musical comedy about Eleanor of Aquitaine and the troubadours. I’ve always thought that would make a wonderful musical, about a troubadour who falls in love with a beautiful queen.

I still think the greatest gift you can give your kids is easy exposure to interesting things. Not compelling them to go see things, but making them feel that art and literature are just parts of the world

Well, it certainly influences my manner of writing, because I always see Darwin as a model of the act of explanation and of argument; the morality, the ethics of explanation, maybe.

I wrote it because it was so. Because it was the force of my experience that pushed the book out of me, like a baby is pushed out of its mother. The mother doesn’t say, “I’ll push this one out for my friends.” You push the book out because you’ve got to – as you push out the baby.