I'm a strong believer that you have to have an equal opportunity to fail and to try things that are hard. I always tell my students, "Don't just take things that are easy for you. If you're really good at math, don't take just math. Take classes that make you write. If you're a really great writer, but bad at math, take math and make yourself work your way through it."

The quicker we get about the business of reducing our reliance on oil the better.

Truly remarkable leadership is not just about motivating others to follow, it's about inspiring them to become leaders themselves and setting the stage for even greater opportunities for future generations.

I grew up in a very loving middle class family. My parents were educators. I'm not even the first PhD in my family. They tried to shield me, just as other parents in my neighborhood tried to shield their children. But you knew there was a reason that you couldn't go to that theme park or to a movie theater or to a hamburger stand. They couldn't shield you completely. What they did though was they never let it be an excuse for not achieving, and they always said racism is somebody else's problem, not yours. They tried in that way not to make us bitter about Birmingham.

But we do have confidence in our institutions. We are not Russia. We have an executive that is constrained. We have a legislature that is real. We have a press that is free. We have courts that are independent. This is not Russia.

The PDB (Bin Laden Determined to Strike in U.S.) does not say the United States is going to be attacked. It says Bin Laden would like to attack the United States. I don't think you, frankly, had to have that report to know that Bin Laden would like to attack the United States.

Every life is worthy and every life is capable of greatness. We have an obligation to make sure that opportunity for greatness is there.