Rather than reacting to every risk we hear and see, we should make an effort to discern which ones we can do something about.

When I was 14, I tried to stab someone.

There is no fulfillment in things whatsoever. And I think one of the reasons that depression reigns supreme amongst the rich and famous is some of them thought that maybe those things would bring them happiness. But what, in fact, does is having a cause, having a passion. And that's really what gives life's true meaning.

No one is ever better off with dictators but there comes a time you know, when you're on an airplane, they always say, "in case of an emergency oxygen masks will drop down. Put yours on first and then administer help to your neighbor." We need oxygen right now.

I've been fortunate enough to travel to 58 different countries and I thank God everyday that I was born in this country. The most exceptional country that the world has ever known. And I want to make sure that we preserve that exceptionalism for the next generation.

There is a tendency of people to try to make you believe only a few people are smart. As a brain surgeon, I know better than that.

Reading is the way out of ignorance, and the road to achievement.