I see Americans of every party, every background, every faith who believe that we are stronger together: black, white, Latino, Asian, Native American; young, old; gay, straight; men, women, folks with disabilities, all pledging allegiance under the same proud flag to this big, bold country that we love. That's what I see. That's the America I know!

One man's ways may be as good as another's, but we all like our own best.

When in doubt, don't.

Those who occupy their minds with small matters, generally become incapable of greatness.

I'm not as famous as Stephen Hawking, but certainly in the U.S., I have a very high profile for a scientist. It is an awesome responsibility, one that I don't shoulder lightly.