Community colleges play an important role in helping people transition between careers by providing the retooling they need to take on a new career.

In America, we then made a commitment, particularly after World War II with the GI Bill, to massively expand our commitment to college education, and that meant we had more engineers and we had more scientists and that meant we had better technology, which meant that we were more productive and we could succeed in the global marketplace.

I've said consistently that I always reserve the right, in conjunction with a broader international effort, to prevent genocide or any wholesale slaughter than might happen inside of Iraq or anyplace else.

We need scientists to design new fuels. We need farmers to help grow them. We need engineers to invent new technologies. We need entrepreneurs to sell those technologies. We need workers to operate assembly lines that hum with high-tech, zero-carbon components. We need builders to hammer into place the foundations for a clean energy age. We need diplomats and businessmen and women, and Peace Corps volunteers to help developing nations skip past the dirty phase of development and transition to sustainable sources of energy. In other words, we need you.

The elevation of appearance over substance, of celebrity over character, of short term gains over lasting achievement displays a poverty of ambition. It distracts you from what's truly important.

All of us have a responsibility to work for the day when the mothers of Israelis and Palestinians can see their children grow up without fear; when the Holy Land of the three great faiths is the place of peace that God intended it to be; when Jerusalem is a secure and lasting home for Jews and Christians and Muslims, and a place for all of the children of Abraham to mingle peacefully together as in the story of Isra - (applause) - as in the story of Isra, when Moses, Jesus, and Mohammed, peace be upon them, joined in prayer. (Applause.)

Better may not be as good as the best, but better is surprisingly hard to obtain. And better is actually harder than worse.