The most successful people in the world aren't usually the brightest. They are the ones who persevere.

The activist is not the man who says the river is dirty. The activist is the man who cleans up the river.

Life is never more fun than when you're the underdog competing against the giants.

When building a team, I always search first for people who love to win. If I can't find any of those, I look for people who hate to lose.

If we really want to know who is responsible for the mess we're in, all we have to do is look in the mirror. You and I own this country, and we are responsible for what happens to it.

In business, people are held accountable. In Washington, nobody is held accountable. In business, people are judged on results. In Washington, people are measured by their ability to get reelected.

Most people give up just when they're about to achieve success.

The debt is like a crazy aunt we keep down in the basement. All the neighbors know she's there, but nobody wants to talk about her.

So many people spend their lives chasing money and end up as the richest men in the cemetery. I don't want to be like that.

War has rules, mud wrestling has rules - politics has no rules.

Most people give up just when they're about to achieve success. They quit on the one yard line. They give up at the last minute of the game one foot from a winning touchdown.

The lion is not so fierce as they paint him.

I don't want to be younger, I just want to look it.

Envy creates the beginning of strife.

Our science has become terrible, our research dangerous, our findings deadly. We physicists have to make peace with reality. Reality is not as strong as we are. We will ruin reality.

To say that a man is made up of certain chemical elements is a satisfactory description only for those who intend to use him as a fertilizer.

No one ever suddenly became depraved.

My children's books are written on the belief that every child has a talent and a passion. Each story unfolds into an adventure of nurturing that confidence until a passion blooms.

A disquieting loneliness came into my life, but it induced no hunger for friends of longer acquaintance: they seemed now like a salt-free, sugarless diet.

I'd love to get ideas on overcoming jet lag.

Things people say strike me as amusing, and I am prone to saying out loud what everybody's thinking.