There is enough oil out there for world demand. It is true that a lot of what's driving oil prices up right now is not the lack of supply. There's enough supply.

Every three weeks, we bring online as much solar power as we did in all of 2008.

Any fool can have a child. That doesn't make you a father. It's the courage to raise a child that makes you a father.

If we’re going to have arguments, let’s have arguments — but let’s make them debates worthy of this body and worthy of this country.

We should be more modest in our belief that we can impose democracy on a country through military force.

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.

It's a generational project just to get America to live up fully to its ideals and to have the kind of society where everybody has a shot, and every kid is getting a good education, and people are getting living wages, and they have decent retirement.