[ General James Mattis] is a Marine's Marine who has served in combat in both Afghanistan and Iraq.

[General James Mattis] said, reading allows you to learn from other people's mistakes without filling body bags with the bodies of your soldiers as you learn on the battlefield.

So in his very politically-incorrect way, I think [James Mattis] is a good counterpart to Donald Trump, who doesn't read books.

General [James] Mattis has got a really intellectual mindset about how the United States should go about protecting its national security.

Why do soldiers fight? They join because they believe in a higher cause -- protecting religion, their nation, defending against a foreign nation. But why do soldier stay and fight? Soldiers aren't individuals. They are part of a unit. And that unit is led by a commander. If they don't trust their commander ... if there is no leadership, there is nothing.

I think that you will see some significant changes in the [Donald] Trump administration.

Certainly, we shouldn't go about making a habit of taking generals and making them secretary of defense.