"In the end, that's what this election is about. Do we participate in a politics of cynicism or a politics of hope?"

"Here at this site, Solyndra expects to make enough solar panels each year to generate 500 megawatts of electricity. And over the lifetime of this expanded facility, that could be like replacing as many as eight coal-fired power plants."

"Part of the reason that our politics seems so tough right now and facts and science and argument does not seem to be winning the day all the time is because we're hardwired not to always think clearly when we're scared. And the country's scared."

"The ocean of adversity cannot drown the spirit that resolves to stay afloat. Remember this in moments of decisive trial — an essential principle for the reflective life."

"High office teaches decision making, not substance. It consumes intellectual capital; it does not create it. Most high officials leave office with the perceptions and insights with which they entered; they learn how to make decisions but not what decisions to make."

"Vision without execution is fantasy; execution without vision is chaos. Remember this in moments of decisive trial — an essential principle for the reflective life."

"It is a steadfast truth that the canvas of imagination has no boundaries except those imposed by fear."

"The beauty of the unknown is that a single spark of imagination can ignite the world."