Not out of mere charity, but because peace in our time requires the constant advance of those principles that our common creed describes; tolerance and opportunity, human dignity and justice.

I will never forget that the only reason I'm standing here today is because somebody, somewhere stood up for me when it was risky. Stood up when it was hard. Stood up when it wasn't popular. And because that somebody stood up, a few more stood up. And then a few thousand stood up. And then a few million stood up. And standing up, with courage and clear purpose, they somehow managed to change the world.

When we think of the major threats to our national security, the first to come to mind are nuclear proliferation, rogue states and global terrorism. But another kind of threat lurks beyond our shores, one from nature, not humans - an avian flu pandemic.

The good news is that the Paris Agreement is not just a bilateral agreement between the United States and some other country. You have 200 countries who came together. It's an international agreement.

The surest path to success is to surround yourself with brilliant women

Later, I would realize that the position of most black students in predominantly white colleges was already too tenuous, our identities too scrambled, to admit to ourselves that our black pride remained incomplete. And to admit our doubt and confusion to whites, to open up our psyches to general examination by those who had caused so much of the damage in the first place, seemed ludicrous, itself an expression of self-hatred - for there seemed no reason to expect that whites would look at our private struggles as a mirror into their own souls, rather than yet more evidence of black pathology.

We understand the concerns that people have with not only protecting our values, but our privacy interests as well. We think that the USA Freedom Act was a good resolution of that.