And so you [young Americans]need to be the Idea Generation. The generation who's always thinking on the cutting edge, who's wondering how to create and keep the next wave of American jobs and American innovations, who's figuring out how to out-compete the Idea Generations of Indias and Chinas of the world.

Cutting the deficit by gutting our investments in innovation and education is like lightening an overloaded airplane by removing its engine. It may make you feel like you're flying high at first, but it won't take long before you feel the impact.

We’re making new investments in the development of gasoline and diesel and jet fuel that’s actually made from a plant-like substance-algae... We could replace up to 17 percent of the oil we import for transportation with this fuel that we can grow right here in the United States.

My family, frankly, they weren't folks who went to church every week. My mother was one of the most spiritual people I knew but she didn't raise me in the church, so I came to my Christian faith later in life and it was because the precepts of Jesus Christ spoke to me in terms of the kind of life that I would want to lead.

International inspectors are on the ground and Iran is being subjected to the most comprehensive, intrusive inspection regime ever negotiated to monitor a nuclear program. Inspectors will monitor Iran's key nuclear facilities 24 hours a day, 365 days a year. For decades to come, inspectors will have access to Iran's entire nuclear supply chain. In other words, if Iran tries to cheat - if they try to find build a bomb covertly, we will catch them.

That bright blue ball rising over the moon's surface, containing everything we hold dear - the laughter of children, a quiet sunset, all the hopes and dreams of posterity - that's what's at stake. That's what we're fighting for. And if we remember that, I'm absolutely sure we'll succeed.

I see tragedy and comedy and pain and irony and all that stuff. But in the end I think life is fascinating, and I think people are more good than bad, and I think that the possibilities of prog­ress are real.