The secretary of Homeland Security working with myself and my staff will begin immediate construction of a border wall.

We need to confront the crisis of Islamic extremism and the Islamists and Islamic terror of all kinds. We must stop what they're doing to inspire, because they do nothing to inspire but kill. Religious leaders must make this absolutely clear. Barbarism will deliver you no glory. Piety to evil will bring you no dignity. If you choose the path of terror, your life will be empty, your life will be brief, and your soul will be fully condemned. And political leaders must speak out to affirm the same idea. Heroes don't kill innocents. They save them.

If we had leaders that knew what they were doing, which we don't.

We're going to renegotiate our disastrous trade deals and illegal immigration. Stop the massive inflow of refugees.

Hillary Clinton wants to put the government totally in charge of your health care despite the fact it's no good. It'll be much more expensive than even today.

I think that we are not in the position that we used to be. I think we were a very powerful, very wealthy country. And we're a poor country now. We're a debtor nation.

On many issues, including on the use of nuclear weapons, it is not clear where [Donald] Trump stands, due to his contradictory statements.