Do what is necessary to be resilient. You will get knocked down. What matters is that you get back up.

You're going to get a lot of advice coming from many different quarters to do things that don't feel right to you, that don't reflect who you are and what your values are. So you have to be grounded in who you are and what you believe.

When you are engaged in both trying to kill and capture the enemy and get support from the local population, you have to be always asking yourself, "Is what I'm doing keeping that balance?"

I have a difference with Senator [Bernie] Sanders, who promises free college, which, if you look at the fine print, depends really on governors coming up with a lot of the money, which I don't think is a particularly wise bet. And I have a plan to help people pay down their student debt, because I want to unleash the entrepreneurial energy that young people have.

We can deploy a half a billion more solar panels.

We're going to do everything we can to make sure workers are treated like assets, not costs.

When I was secretary of state, we actually increased American exports globally 30 percent. We increased them to China 50 percent.