Unemployment is low, incomes are up, poverty is down - and that's going to be a lasting change.

Whatever we think of the past, we must not be prisoners to it.

In a world of complex threats, our security and leadership depends on all elements of our power - including strong and principled diplomacy.

Isil poses a threat to the people of Iraq and Syria, and the broader Middle East - including American citizens, personnel and facilities. If left unchecked, these terrorists could pose a growing threat beyond that region, including to the United States.

If John McCain wants to have a debate about who has the temperament, and judgment, to serve as the next Commander-in-Chief, that's a debate I'm ready to have.

You may want to prove that you're worthy of other kids or neighbors who were wealthier than you and teased you. You may want to prove that you're worthy of high expectations. But I do think that there is a youthful ambition that very much has to do with making your mark in the world. And I think that cuts across the experiences of a lot of people who end up achieving something significant in their field.

I say that is because those are the times where sometimes you feel actually a little bit hurt. Because you feel like saying to these folks, "[Don't] you think if I could do it, I [would] have just done it. Do you think that the only problem is that I don't care enough about the plight of poor people, or gay people, or immigrants, or ...?"