Some technologies don't pan out; some companies fail. But I will not walk away from the promise of clean energy. ... I will not cede the wind or solar or battery industry to China or Germany because we refuse to make the same commitment here.

If I were German and I had a vote, I might support Angela Merkel.

People are discouraged from voting and part of what is important for Latino citizens is to make your voice heard, because you're not just speaking for yourself. You're speaking for family members, friends, classmates of yours in school.

In many ways [those middle-aged black ladies] my touchstone, because they are what I meant when I talked about the audacity of hope.

It was basic research in the photoelectric field-in the photoelectric effect that would one day lead to solar panels. It was basic research in physics that would eventually produce the CAT scan. The calculations of today's GPS satellites are based on the equations that Einstein put to paper more than a century ago.

To everyone in this Congress who still refuses to raise the minimum wage, I say this: If you truly believe you could work full-time and support a family on less than $15,000 a year, go try it. If not, vote to give millions of the hardest-working people in America a raise.

And, as a consequence of the pressure that we've applied over the last couple of weeks, we have Syria -- for the first time -- acknowledging that it has chemical weapons, agreeing to join the convention that prohibits the use of chemical weapons, and the Russians -- their primary sponsors -- saying that they will push Syria to get all of their chemical weapons out. The distance that we've traveled over these couple of weeks is remarkable.