The small irritations or indignities that we experience are nothing compared to what a previous generation experienced... It’s one thing for me to be mistaken for a waiter at a gala. It’s another thing for my son to be mistaken for a robber and to be handcuffed or, worse, if he happens to be walking down the street and is dressed the way teenagers dress.

What makes you a man is not the ability to make a child, it's the courage to raise one.

The Russians don't make determinations about what our defense posture is.

When people are oppressed, and human rights are denied - particularly along sectarian lines or ethnic lines - when dissent is silenced, it feeds violent extremism, it creates an environment that is ripe for terrorists to exploit. When peaceful, democratic change is impossible, it feeds into the terrorist propaganda that violence is the only answer available.

There's one issue that will define the contours of this century more dramatically than any other, and that is the urgent and growing threat of a changing climate.

I think perhaps education doesn’t do us much good unless it is mixed with sweat.

The biggest challenge, I think, is always maintaining your moral compass.