We've evolved a lot since 9/11 also, in terms of our law enforcement capabilities, our intelligence capabilities, military, counterterrorism.

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.

Everyday hundreds of people came to the hospital... dying, and I have to introduce life into them again... my duty was to compete with death.

I've learned so much from my failures that I'm thinking of having some more.

An adaptable company is one that captures more than its fair share of new opportunities. It's always redefining its 'core business' in ways that open up new avenues for growth.

The only person pressuring me is myself.

You don't want another Enron? Here's your law: If a company, can't explain, in one sentence, what it does... it's illegal.

The human head is of the same approximate size and weight as a roaster chicken. I have never before had occasion to make the comparison, for never before today have I seen a head in a roasting pan.

Givers advance the world. Takers advance themselves and hold the world back

Happiness is equilibrium. Shift your weight.

So, for me, working with larger companies has often been very satisfying, precisely because of the ability of bringing critical mass to bear on a given effort.

Whenever I'm feeling a bit down, I always visit the local children's hospital. Knowing that those cancer-kids wont be able to live long enough to surpass me in fame just warms my heart, you know?