When you can't rely on sticking a pipe in the ground, what you have to rely on is unlocking the energy and talent of all your people - men and women.

There is a connection between energy, climate, food and political stability. That has played out in the Arab awakening and is not done playing out.

Almost all the students who make it to Caltech, one of the best scientific universities in the world, come from public schools. So it can be done.

Pessimists are usually right and optimists are usually wrong but all the great changes have been accomplished by optimists.

Criticizing Israel is not anti-Semitic, and saying so is vile. But singling out Israel for opprobrium and international sanction - out of all proportion to any other party in the Middle East - is anti-Semitic, and not saying so is dishonest.

If you don't visit the bad neighborhoods, the bad neighborhoods are going to visit you.

A vision without resources is an hallucination.