I have become a symbol of the possibility of America returning to our best traditions.

You can’t let your failures define you. You have to let your failures teach you.

Change will not come if we wait for some other person or some other time. We are the ones we've been waiting for. We are the change that we seek.

Keep exploring. Keep dreaming. Keep asking why. Don’t settle for what you already know. Never stop believing in the power of your ideas, your imagination, your hard work to change the world.

When ignorant folks want to advertise their ignorance, you don't really have to do anything, you just let them talk.

Just because we have the best hammer does not mean that every problem is a nail.

Change is never easy, but always possible.

Don’t ever let anybody tell you that your efforts don’t matter or that your voice doesn’t count. Don’t ever believe that you can’t make a difference. You have.

Where you are right now doesn't have to determine where you'll end up.

Learning to stand in somebody else's shoes, to see through their eyes, that's how peace begins. And it's up to you to make that happen. Empathy is a quality of character that can change the world.

If somebody is different from you, that's not something you criticize, that's something that you appreciate.

Embrace every good opportunity you encounter

Language is the source of misunderstandings.

That probably greatest of narcissistic wounds -- not to have been loved just as one truly was -- cannot heal without the work of mourning.

That's really the challenge of this century, to develop spokespeople.

If marriage were only bed, we could have made it.

I'm a physician. I've been blessed with ideas and resources to use technology to make the world a better place. That's what I would like to leave behind.

I don't think we're doing an adequate vetting process of those who are coming to our country.

One of the paradoxes of writing is that when you write non-fiction everyone tries to prove that it's wrong, and when you publish fiction, everyone tries to see the truth in it.

In the fantasy, sci-fi world, the fans are so discerning and they're so tough and they're so intelligent, and they're so critical.

I have climbed Everest from the Nepal route and the China route. The other routes are too hard for me. So I don't think I can climb Everest again.