My challenge is to make sure the things I say and the things I do remain consistent for as often and as long as possible. My why is to inspire people to do the things that inspire them so that together we can change our world. That's why I wake up every single day. I'm agnostic to the form it takes: I teach, I write, I speak, I advise.

The primary ingredient for progress is optimism. The unwavering belief that something can be better drives the human race forward.

Too many people write books because they want to be a New York Times best-seller. They want the glory and the fame.

We can rationalize anything and easily quit on ourselves. Leadership is refusing to quit on others.

Leaders are the ones who have the courage to go first, to put themselves at personal risk to open a path for others to follow.

If you're looking for a New York Times best-seller, I may or may not give you that.

The more you inspire, the more people will inspire you.