That is the American story. People, just like you, following their passions, determined to meet the times on their own terms. They weren't doing it for the money. Their titles weren't fancy. But they changed the course of history and so can you.

What has made America the wealthiest, most successful country on Earth historically has been our commitment to education.

There's a lot of people talking about elitism and all of that.Yes, I went to Princeton and Harvard, but the lens through which I see the world is the lens that I grew up with. I am the product of a working class upbringing.

It's important to know that the vast majority of people who were excited in 2008 are still really enthusiastic. We've got more volunteers now than ever, and they're engaged, they're motivated, they're not paying attention to the ups and downs of polls or Washington.

Don't let your failures define you.

There is a little bit of that schoolyard attitude of, it's one thing for a guy your own size to mouth off to you, but if there's a little guy, you should just smack him around. And it's probably bad advice in the schoolyard. It's certainly not a good way to run a foreign policy because even when you are dealing with a non-peer, militarily, war is complicated.

The Cuban people must know that they have a friend and partner in the United States of America.