More people can be great leaders than think they can, but they need a purpose greater than themselves.

Nearly every problem has been solved by someone, somewhere. The challenge of the 21st century is to find out what works and scale it up.

If you wanna maintain 20 percent of the world's income with 4 percent of the world's people, you gotta first of all have more shared prosperity and shared growth.

Nearly everyone will lie to you, given the right circumstances.

In our hearts and in our laws, we must treat all our people with fairness and dignity, regardless of their race, religion, gender or sexual orientation. . . .

You know, everybody makes mistakes when they are president.

Our policy is guided by the principle that we will keep unauthorized aliens out of the United States, welcome legal immigrants, and protect refugees from harm. Our solutions rely on working in partnership with States and communities.