“There is no excuse for not trying.”

“At the end of the day, the circumstances of your life-- what you look like,where you come from, how much money you have, what you've got going on at home--none of that is an excuse... where you are right now doesn't have to determine where you'll end up. No ones written your destiny for you, because here in America, you write you own destiny.You make your own future.”

“Someone once said that every man is trying to live up to his father's expectations or make up for their father's mistakes....”

“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.”

“You see, when a tragedy like this strikes, it is part of our nature to demand explanations - to try to impose some order on the chaos, and make sense out of that which seems senseless.”

“She was one of those quiet heroes that we have all across America.They’re not famous. Their names are not in the newspapers, but each and every day they work hard. They aren’t seeking the limelight. All they try to do is just do the right thing.”

“And that, I suppose, is what I'd been trying to tell my mother that day: that her faith in justice and rationality was misplaced, that we couldn't overcome after all, that all the education and good intentions in the world couldn't help you plug up the holes in the universe or give you the power to change its blind, mindless course.”