If you are married and you go off and have an affair with someone, if you are a husband who does that, it may potentially hurt your wife enormously. But it seems to me likely also to compromise your marriage. That seems to me to be a harm.

There is a line that I always loved from Lucretius. He said, "The sublime is the art of exchanging easier for more difficult pleasures." The presumption of that formulation is that the more difficult pleasures are actually better than the easier pleasures. That is why one makes the exchange.

Being gay is immutable. Maybe someday we'll figure out more of the science and it will be changeable, but we have no leads so far.

If some glorious angel suddenly descended through my living room ceiling and offered to take away the children I have and give me other, better children — more polite, funnier, nicer, smarter — I would cling to the children I have and pray away that atrocious spectacle.

I was in fact anxious about whether I would be any good at being a father. And then I met so many people who had been good parents under difficult circumstances, and I felt inspired by them.

I don't accept subtractive models of love, only additive ones. And I believe that in the same way we need species diversity to ensure that the planet can go on, so we need this diversity of affection and diversity of family in order to strengthen the ecosphere of kindness.

I'm not studying everything that can go wrong. What I'm studying is how much love there can be, even when everything appears to be going wrong.