Every moment wasted looking back, keeps us from moving forward.

I'm going to try to get everybody who makes less than $125,000 in their family, which is the vast majority of people, to be able to go to a public college or university totally tuition-free. And if you make more than that, debt-free.

Well, human security is a concept that I am very committed to enshrining in American foreign policy.

Refraining from violence is not a sign of weakness in one's faith but a sign that one's faith is unshakeable

We have a lot of kids who don't know what works means. They think work is a four-letter word.

President Lincoln was trying to convince some people, he used some arguments, convincing other people, he used other arguments. That was a great - I thought a great display of presidential leadership.

It cannot be an American fight. And I think what the president [Barack Obama] has consistently said - which I agree with - is that we will support those who take the fight to ISIS. That is why we have troops in Iraq that are helping to train and build back up the Iraqi military, why we have special operators in Syria working with the Kurds and Arabs, so that we can be supportive.