No matter how much you've done, or how successful you've been, there's always more to do, always more to learn, and always more to achieve.

[Donald Trump] is in the process of building up an organization. And well, we'll have to see how that works. And it'll be a test, I think, for him and the people that he's designated to be able to execute on his vision.

I mean, I do think at a certain point you've made enough money.

In December, I agreed to extend the tax cuts for the wealthiest Americans because it was the only way I could prevent a tax hike on middle-class Americans. But we cannot afford $1 trillion worth of tax cuts for every millionaire and billionaire in our society. We can't afford it. And I refuse to renew them again.

Now, as the world's largest economy and as the world's second largest emitter, America bears our responsibility to address climate change, and we intend to meet that responsibility.

If I'm president, some day, young kids will look at the world differently. They will say, I could be president some day. They couldn't have said that before I came along. The world will see the United States in a different context, as a country of true opportunity for all.

The size of your paycheck shouldn’t determine your child’s future.