I think a lot of moral debates are not over what is the basis of justice, but who gets a ticket to play in the game.

Of course, genes can't pull the levers of our behavior directly. But they affect the wiring and workings of the brain, and the brain is the seat of our drives, temperaments and patterns of thought.

Photography is a kind of virtual reality, and it helps if you can create the illusion of being in an interesting world.

The brain is not a bag of traits. It's startlingly complex. There are few or no single genes with a consistent effect on the mind.

Anything that makes it easier to imagine trading places with someone else increases your moral consideration for that other person.