"What I want to do today is talk about some ideas I've been exploring concerning the origin of human kindness. And I'll begin with a story that Sarah Hrdy tells at the beginning of her excellent new book, "Mothers And Others."  She describes herself flying on an airplane. It’s a crowded airplane, and she's flying coach. She's waits in line to get to her seat; later in the flight, food is going around, but she's not the first person to be served; other people are getting their meals ahead of her. And there's a crying baby.

"Culture is our biological strategy. It's a new and better way of relating to each other, based on shared information and division of labor, interlocking roles and things like that. And it's worked. It's how we solve the problems of survival and reproduction, and it's worked pretty well for us in that regard. And so the distinctively human traits are ones often there to make this new kind of social life work."

"In spite of these beliefs I do think about decisions as reasoned or instinctual when I'm thinking about them for myself. And this has obviously been a very powerful way of thinking about how we do things  because it goes back to earliest written thoughts. We have reason, we have emotion, and these two things can compete. And some are unique to humans and others are shared with other species."

"I just briefly want to say, I think it's also crucial, as long as you're going to be a nativist and say, "oh, you know, evolution, it's innate," you also have to be a constructivist. I'm all in favor of reductionism, as long as it's paired with emergentism. You've got to be able to go down to the low level, but then also up to the level of institutions and cultural traditions and, you know, all kinds of local factors. A dictum of cultural psychology is that "culture and psyche make each other up." You know, we psychologists are specialists in the psyche.

"Now, it's true that, as scientists, our basic job is to describe the world as it is. But I don't think that that's the only thing that matters. In fact, I think the reason why we're here, the reason why we think this is such an exciting topic, is not that we think that the new moral psychology is going to cure cancer. Rather, we think that understanding this aspect of human nature is going to perhaps change the way we think and change the way we respond to important problems and issues in the real world.

"...what's really exciting about this new work is not so much just the very idea of philosophers doing experiments but rather the particular things that these people ended up showing. When these people went out and started doing these experimental studies, they didn't end up finding results that conformed to the traditional picture. They didn't find that there was a kind of initial stage in which people just figured out, on a factual level, what was going on in a situation, followed by a subsequent stage in which they used that information in order to make a moral judgment.

"...I think we should differentiate three projects that seem to me to be easily conflated, but which are distinct and independently worthy endeavors. The first project is to understand what people do in the name of "morality." We can look at the world, witnessing all of the diverse behaviors, rules, cultural artifacts, and morally salient emotions like empathy and disgust, and we can study how these things play out in human communities, both in our time and throughout history. We can examine all these phenomena in as nonjudgmental a way as possible and seek to understand them.