In 2013 we had never faced a crisis like the Syrian refugee crisis now. Up until that point, a refugee meant someone fleeing oppression, fleeing Communism like it is in my community.

In Cuba, His Holiness [Pope Francis] won't find a government that protects its people and their God-given rights. Instead, he will find a regime that oppresses people and hinders progress, both socially and politically.

There is not a single person in the national defense apparatus of this country that can guarantee you are going to be 100 percent right. And that's why as president, I'll take this very seriously.

I think, again, on issues of energy, how are we going to fully utilize our energy resources in this country? What is the role of the federal government in higher education? What kind of justices would you appoint to the Supreme Court, not just because we have a vacancy now, but at least one or two potentially in the next four to eight years?

When you talk about entitlement programs, it's not just about - it's not about cutting those programs. It is about saving those programs. Those programs are on a path of fiscal unsustainability.

I never wanted it to get to this point. I had hoped that, by its own course, by the way the media covers politics, people would open their eyes and see who Donald Trump really is. But that, unfortunately, has not happened. The polls in the early states indicate that he's been able to fool a significant number of people into believing that he is something that he is not.

We live in a society obsessed with public opinion. But leadership has never been about popularity.