We need a much better understanding of the climate before making policy choices that would impose substantial economic costs on our Nation.

What I believe is that we should defend life.

You don't have to solve every problem at once.

If we topple [Bashar] Assad, the result will be ISIS will take over Syria, and it will worsen U.S. national security interests.

I think if you're at home and you don't want Donald Trump to be the Republican nominee, then the only candidate who can beat Donald is our campaign. And so I would encourage, even if you like another candidate, stand with us if you don't want Donald to be the nominee.

The only way to win the war is to move people's hearts and minds.

Marco [Rubio] made reference earlier to the litigation against Trump University. It's fraud case. I want you think about if this man is the nominee, having the Republican nominee on the stand in court being cross examined about whether he committed fraud. You don't think the mainstream media will go crazy on that?