What keeps me up at night in a negative way is, if we don't solve the problems of the human heart and of the human head, of human psychology, there is no technological solution so great that it can prevent the world that is coming, and a world of suitcase bombs or of the ability to pollute the planet in a way that it cannot recover, of global warming and the rest. We've created through science and technology a different world that has frightening sides to it, and psychology and behavioral science has to be part of this. We're going to have to find a way to humanize the culture itself.

There is a middle path between indulgence and suppression, but the culture has overwhelmed that in the cacophony that has been created in the modern world and the commercial encouragement of avoidance and indulgence on the one hand, or suppression and "just do it," treating yourself as an object on the other. We've got to find a way that's more compassionate, softer, that allows us to move forward towards the kind of lives that we really want to live.

It's pretty clear in how things are moving in empirically supported treatments that we're going to be speaking to the culture in a different voice. It's going to have some echoes of some of the deeper clinical and spiritual and religious traditions that had wisdom in it. If we're not going to get there through religious means and things of that kind, we're going to have to find a way to put it in the culture in a different way, because we need something right now other than yet another cable shoutcast or yet another Internet Web page showing us the cellulite on the actress's rear end.

When we fly planes over countries, dropping bombs on the evil ones, I think we're doing something very similar to what's being done when the infidels are getting their comeuppance with planes going into buildings. So it's gotten to the point where if we are not healthy psychologically as a human society, we will not have a planet to live on. And that's what keeps me up at night, when I see so little focus on the behavioral side of these problems, and the idea that just politics, or just physical science, is going to solve this.

Antidepressant medications, you still have some depressive thoughts. Antipsychotic medications, you still have some psychotic symptoms for the vast majority of the people taking them. But it gives them a little separation, and it doesn't control his behavior as much when you have a sad feeling, difficult thought, an odd perceptual experience. We can teach people those exact skills in therapy, you get longer-term benefits and without the side effects. So don't be sold just because a commercial interest wants to sell you things.

The changes that we can make in the culture can be there for people that we will never meet, that will never know us, and that's what keeps me up at night. It's what excites me about science, that we can learn ways of being with each other. And the behavioral sciences have not been enough of a part of cultural development. The physical sciences have; the behavioral sciences have not. And I would like to see if we can bring some things into human culture that would humanize and soften and empower people.

One dangerous definition of happiness is to think of happiness as kind of a warm, joyful feeling in your heart that you have to pursue and grab and hold onto for fear that it'll go away. A better way to think about happiness that actually is something that I think you can reach towards is, it's living in accord with your values and in a way that is more open and accepting of your history as it echoes into the present, that's more self-affirming, self-validating and values-based. The Greeks had a word for it; they called it eudaimonia. And it is something that will empower human lives.