It's the discipline to understand that the things that might make you rich or things might make you famous are sometimes worth pursuing and sometimes are not.

What's important to me is that I put messages out, whether it's a TED talk, whether it's a book.

We think leadership is about rank and power, but better to think of leadership as the responsibility for other human beings. That leadership and rank may not go together. So it manifests in this remarkable way.

Leadership is a choice. It is not a rank.

Leadership is like parenting.

The courage of leadership is giving others the chance to succeed even though you bear the responsibility for getting things done.

Leadership is absolutely about inspiring action, but it is also about guarding against mis-action.