"We expect people to come and argue and fight and have different beliefs. That’s what the system is all about. We expect the party out of power to oppose the party in power. That's part of our system. But at the same time, you have to do it on the basis of comity. And you have to do it on the basis of mutual respect. I may disagree with you, but I’m not out to destroy you. We’ve got to find a way. And yes, I think what I’m seeing now in the last few years is perhaps the worst I've seen in the 40 years I've been hanging around Washington."
"For too long we've been told about "us" and "them." Each and every election we see a new slate of arguments and ads telling us that "they" are the problem, not "us." But there can be no "them" in America. There's only us."
"I think this is the most extraordinary collection of talent, of human knowledge, that has ever been gathered together at the White House, with the possible exception of when Thomas Jefferson dined alone. (Address at a White House dinner honoring Nobel Prize winners)"
"The best way to not feel hopeless is to get up and do something. Don’t wait for good things to happen to you. If you go out and make some good things happen, you will fill the world with hope, you will fill yourself with hope."
"Gay pride was not born of a need to celebrate being gay, but our right to exist without persecution. So instead of wondering why there isn't a straight pride movement, be thankful you don't need one."
"Mr. President, I’ll be honest with you, I was born in the U.S., I was trained as an engineer in the U.S., I’m a patriot -- both of my parents were veterans of World War II; they’re interred at Arlington. And I want the U.S. to lead. I want the U.S. to be the best in the world at the solutions and the innovations, and what it’s going to take to address climate change for the betterment of everybody."