Your voice can change the world.

History doesn't always move in a straight line. Sometimes it zigs and zags.

Any time bombs are used to target civilians it is an act of terror.

There's no doubt that I'm a better president now than when I first took office. This is not a job where there's a manual, and over time you get a better sense of what's important, what's not, how to see around corners and anticipate problems, as opposed to just managing problems once they've arrived.

If you give up on the idea that your voice can make a difference, then other voices will fill the void

[Young people] are showing enormous and entrepreneurship and working with each other across borders.

I don't buy the hype when everybody is saying how wonderful things are and how great I am, and I don't get too down when people say, "This is a disaster and he's done for."