“But that’s part of what makes America wonderful, is we always had this nagging dissatisfaction that spurs us on. That’s how we ended up going west, that’s how we--“I’m tired of all these people back east; if I go west, there’s going to be my own land and I’m not going to have to put up with this nonsense, and I’m going to start my own thing, and I’ve got my homestead.” ...It is true, though, that that restlessness and that dissatisfaction which has helped us go to the moon and create the Internet and build the Transcontinental Railroad and build our land-grant colleges, that those things, born of dissatisfaction, we can very rapidly then take for granted and not tend to and not defend, and not understand how precious these things are.”

“For my grandfather, race wasn’t something you really needed to worry about anymore; if ignorance still held fast in certain locales, it was safe to assume that the rest of the world would be catching up soon.

“What makes us exceptional, what makes us America is our allegiance to an idea articulated in a declaration made more than two centuries ago. We hold these truths to be self-evident, that all men are created equal.”

“As president, I believe that robotics can inspire young people to pursue science and engineering. And I also want to keep an eye on those robots in case they try anything.”

“I listened to a Republican colleague work himself into a lather over a proposed plan to provide school breakfasts to preschoolers. Such a plan, he insisted, would crush their spirit of self-reliance. I had to point out that not too many five-year-olds I knew were self-reliant, but children who spent their formative years to hungry to learn could very well end up being charges of the state.”

“Unfortunately, too many of our schools depend on inexperienced teachers with little training in the subjects they're teaching, and too often those teachers are concentrated in already struggling schools.”

“Maybe the critics are right. Maybe there's no escaping our great political divide, an endless clash of armies, and any attempts to alter the rules of engagement are futile. Or maybe the trivialization of politics has reached a point of no return, so that most people see it as just one more diversion, a sport, with politicians our paunch-bellied gladiators and those who bother to pay attention just fans on the sidelines: We paint our faces red or blue and cheer our side and boo their side, and if it takes a late hit or cheap shot to beat the other team, so be it, for winning is all that matters. But I don't think so. They are out there, I think to myself, those ordinary citizens who have grown up in the midst of all the political and cultural battles, but who have found a way-in their own lives, at least- to make peace with their neighbors, and themselves. ...I imagine they are waiting for a politics with the maturity to balance idealism and realism, to distinguish between what can and cannot be compromised, to admit the possibility that the other side might sometimes have a point. They don't always understand the arguments between right and left, conservative and liberal, but they recognize the difference between dogma and common sense, responsibility and irresponsibility, between those things that last and those that are fleeting. They are out there, waiting for Republicans and Democrats to catch up with them.”

“Life doesn't count for much unless you're willing to do your small part to leave our children – all of our children – a better world. Even if it's difficult. Even if the work seems great. Even if we don't get very far in our lifetime.”

“Cynicism is a sorry kind of wisdom.”

“I've been fighting with Acorn, alongside Acorn, on issues you care about, my entire career.”

“It was Jefferson, not some liberal judge in the sixties, who called for a wall between church and state—and if we have declined to heed Jefferson’s advice to engage in a revolution every two or three generations, it’s only because the Constitution itself proved a sufficient defense against tyranny.”

“A lot of shelter dogs are mutts like me.”

“When I was a kid I inhaled frequently. That was the point.”

“We will extend our arms to you[world] if you unclench your fists.”

“Change has come!”