The visionary starts with a clean sheet of paper, and re-imagines the world.

Trump is an innovator who has shown how out of step the political establishment was. Which I think, probably, in the long term will be healthy. We have to figure out how to reinvigorate our political institutions and he's demonstrating to us the urgency of that task.

You can learn as much - or more - from one glance at a private space as you can from hours of exposure to a public face.

I always resist seeing my own personal motivation in my work, but I guess it must be there on some level. And I do feel very much that my life follows the kinds of things I talk about in my books. I've always thought of myself as an insanely lucky person, so perhaps the success of my first two books led me to want to examine this phenomenon on some unconscious level.

There's no idea that can't be explained to a thoughtful 14-year-old. If the thoughtful 14-year-old doesn't get it, it is your fault, not the 14-year-old's.

Living a long life, the conventional wisdom at the time said, depended to a great extent on who we were-that is, our genes. It depended on the decisions we made-on what we chose to eat, and how much we chose to exercise, and how effectively we were treated by the medical system. No one was used to thinking about health in terms of community.

Whenever we have something that we are good at--something we care about--that experience and passion fundamentally change the nature of our first impressions.