At the moment, our society’s notion of success is largely composed of two parts: money and power. But it’s time for a third metric, beyond money and power - one founded on well-being, wisdom, our ability to wonder, and to give back.

Having a partner definitely allows you to take more risks.

I usually start with a big question, such as whether people today are happier than in the past, or why men have dominated women in most human societies. And then I follow the question instead of trying to follow my own answer, even if it means I can't formulate any clear theory.

Failure is not the opposite to success, it's a stepping stone to success. If our primary goal is to be approved of, then we are not going to take risks, we are not going to speak out, we are going to try to blend in.

How could someone with a renowned ability to inspire, communicate complex ideas, and connect with voters find himself in this position? The President [Barack Obama], though a dedicated student of history, has seemingly failed to learn the lesson of our nation's most significant political confrontations: They've required single-minded determination, and the willingness to battle until the fight was won.

In theory we are all equal before the law. In practice, there are overwhelming privileges that come with winning the birth lottery.

The more fearless we are in our personal lives, the more of that spirit we'll bring to changing our world.