Don't be afraid to ask questions. Don't be afraid to ask for help when you need it. I do that every day. Asking for help isn't a sign of weakness, it's a sign of strength. It shows you have the courage to admit when you don't know something, and to learn something new.

With the changing economy, no one has lifetime employment. But community colleges provide lifetime employability.

I believe that the U.S. can and should be a global leader in the development of alternative energy sources.

My father's voice had nevertheless remained untainted, inspiring, rebuking, granting or withholding approval. 'You do not work hard enough, Barry. You must help in your people's struggle. Wake up, black man!

I think raising wages, investing in infrastructure, making sure that people have access to good educations that equip them for the jobs of the future. Those are all agenda items that would help alleviate some of those economic pressures and dislocations that people are experiencing. The problem was I couldn't convince the Republican Congress to pass a lot of them.

Tonight, more Americans are out of work and more are working harder for less. More of you have lost your homes and even more are watching your home values plummet. More of you have cars you can't afford to drive, credit card bills you can't afford to pay, and tuition that's beyond your reach.

Keep exploring. Keep dreaming. Keep asking why. Don’t settle for what you already know. Never stop believing in the power of your ideas, your imagination, your hard work to change the world.