“People who really want to make a difference in the world usually do it, in one way or another. And I’ve noticed something about people who make a difference in the world: They hold the unshakable conviction that individuals are extremely important, that every life matters. They get excited over one smile. They are willing to feed one stomach, educate one mind, and treat one wound. They aren’t determined to revolutionize the world all at once; they’re satisfied with small changes. Over time, though, the small changes add up. Sometimes they even transform cities and nations, and yes, the world.”

“One small changed family doesn't calculate into a world that has been spinning for a billion years. But one small change makes the world spin differently in a billion ways for one family.”

“I have never been especially impressed by the heroics of people convinced they are about to change the world. I am more awed by those who struggle to make one small difference.”

“You don’t have to know a lot of things for your life to make a lasting difference in the world. But you do have to know the few great things that matter, perhaps just one, and then be willing to live for them and die for them. The people that make a durable difference in the world are not the people who have mastered many things, but who have been mastered by one great thing.”

“I get up every morning determined to both change the world and have one hell of a good time. Sometimes this makes planning my day difficult.”

“We must remember that one determined person can make a significant difference, and that a small group of determined people can change the course of history.”