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.

I want good science, and I want it to be realistically marketed. I wouldn't like only two countries on the planet that allow pharmaceutical companies to market directly to people, New Zealand and the United States. It ought to be better regulated. And when it's presented to people, it ought to be presented in a way that's realistic. For example, often people will prescribe antidepressant medications, and we'll say, you have a brain disease; you'll have to be on these medications permanently. There is no biological marker for depression. It's not true that we know that it's a brain disease.

Let's take something like antidepressant medications. There's decent science saying it has an effect, but it's shockingly small after you control for penetration of the blind, people knowing that they're getting the active pills versus sugar pills, if you use an active control. It's probably only a few points. But it's a multi, multibillion-dollar industry. And by the way, has huge side effects. 40 percent of the people taking them have significant sexual side effects. And that's just one. A single antidepressant medication can be worth a billion dollars to a company.

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.

I think the commercial culture, and also science and technology after all, which gives us greater ease but also makes it harder for us to sit with the small amounts of distress that come just by living itself. It isn't that we're chasing happiness; I think we have the wrong model of happiness. I mean, defined as eudaimonia, defined as a values-based life of integrity and fidelity to yourself and what you most deeply want to stand for, that definition of happiness - man, that's the kind of life I want to live and I think that will support people and sustain people.

The prescribers very often overstate, oversell, and the detail people are only too happy to tell them to do that. This idea that there's something wrong with your brain, and by the way, almost never are these antidepressant medications evaluated with what will happen if you're on them for three, four, five, 10, 15 years. Sometimes some of the side effects that come up come up only later, and sometimes they're very severe, even irreversible side effects.

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.