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.

I'm told there's a saying from those ancient times, kalos kai agathos, when someone or something is good and beautiful on the outside, but is also good and noble on the inside in terms of character and in terms of purpose. And I think that's a fine description of the friendship that exists between the Greek people and the American people.

My faith reminds me that we all are sinners.

We need to steer clear of this poverty of ambition, where people want to drive fancy cars and wear nice clothes and live in nice apartments but don't want to work hard to accomplish these things. Everyone should try to realize their full potential.

It [is] that courage that Africa most desperately needs.

Because our right to worship freely and safely, that right was denied to Christians in Charleston, South Carolina, and that was denied Jews in Kansas City, and that was denied Muslims in Chapel Hill, and Sikhs in Oak Creek. They had rights too. Our right to peaceful assembly, that right was robbed from movie goers in Aurora and Lafayette.

Our pride is based on a very simple premise, summed up in a declaration made over two hundred years ago.