“Each path to knowledge involves different rules and these rules are not interchangeable.”

“When people at dinner parties ask me how I can possibly operate in the current political environment, with all the negative campaigning and personal attacks, I may mention Nelson Mandela, Aleksandr Solzhenitsyn, or some guy in a Chinese or Egyptian prison somewhere. In truth, being called names is not such a bad deal.”

“Democracy demands that the religiously motivated translate their concerns in to universal, rather than religion-specific, values... it requires that their proposals be subject to argument and amenable to reason. Now I may be opposed to abortion for religious reasons, to take one example, but if I seek to pass a law banning the practice, I cannot simply point to the teachings of my church or evoke God's will. I have to explain why abortion violates some principle that is accessible to people of all faiths, including those with no faith at all.”

“I know that the response of the powerful to this disorder—alternating as it does between a dull complacency and, when the disorder spills out of its proscribed confines, a steady, unthinking application of force, of longer prison sentences and more sophisticated military hardware—is inadequate to the task.”

“I've now been in 57 states -- I think one left to go." --at a campaign event in Beaverton, Oregon” 

“But by the end of two years, most have either changed careers or moved to suburban schools - a consequence of low pay, a lack of support from the educational bureaucracy, and a pervasive feeling of isolation.”

“We may come from different places and have different stories, but we share common hopes, and one very American dream.”

“In case you missed it, this week, there was a tragedy in Kansas. Ten thousand people died -- an entire town destroyed." --on a Kansas tornado that killed 12 people”

“This election is about the past vs. the future. It's about whether we settle for the same divisions and distractions and drama that passes for politics today or whether we reach for a politics of common sense and innovation, a politics of shared sacrifice and shared prosperity. There are those who will continue to tell us that we can't do this, that we can't have what we're looking for, that we can't have what we want, that we're peddling false hopes. But here is what I know. I know that when people say we can't overcome all the big money and influence in Washington, I think of that elderly woman who sent me a contribution the other day, an envelope that had a money order for $3.01 along with a verse of scripture tucked inside the envelope. So don't tell us change isn't possible. That woman knows change is possible. When I hear the cynical talk that blacks and whites and Latinos can't join together and work together, I'm reminded of the Latino brothers and sisters I organized with and stood with and fought with side by side for jobs and justice on the streets of Chicago. So don't tell us change can't happen. When I hear that we'll never overcome the racial divide in our politics, I think about that Republican woman who used to work for Strom Thurmond, who is now devoted to educating inner city-children and who went out into the streets of South Carolina and knocked on doors for this campaign. Don't tell me we can't change. Yes, we can. Yes, we can change. Yes, we can. Yes, we can heal this nation. Yes, we can seize our future. And as we leave this great state with a new wind at our backs and we take this journey across this great country, a country we love, with the message we carry from the plains of Iowa to the hills of New Hampshire, from the Nevada desert to the South Carolina coast, the same message we had when we were up and when we were down, that out of many, we are one; that while we breathe, we will hope. And where we are met with cynicism and doubt and fear and those who tell us that we can't, we will respond with that timeless creed that sums up the spirit of the American people in three simple words -- yes, we can.”

“No, what's troubling is the gap between the magnitude of our challenges and the smallness of our politics--the ease with which we are distracted by the petty and trivial, our chronic avoidance of tough decisions, our seeming inability to build a working concensus to tackle any big problem.”

“For we know that our patchwork heritage is a strength, not a weakness.”

“I've got daughters. Nine years old and six years old. First of all, I'm gonna teach them about values and morals. But if they make a mistake, I don't want them PUNISHED with a baby.”

“The conservative revolution that Reagan helped usher in gained traction because Reagan's central insight - that the liberal welfare state had grown complacent and overly bureaucratic, with Democratic policy makers more obsessed with slicing the economic pie than with growing the pie - contained a good deal of truth.”

“church socials, beauty shops and barbershops. If two guys were standing on a corner, I would cross the street to hand them campaign literature. And everywhere I went, I’d get some version of the same two questions. “Where’d you get that funny name?” And then: “You seem”

“No, no. I have been practicing...I bowled a 129. It's like -- it was like Special Olympics, or something." --making an off-hand joke during an appearance on "The Tonight Show", March 19, 2009”