Know the difference between principles based on right or wrong vs. principles based on personal gain, and consider the basis of your own principles.

To acquire knowledge, one must study; but to acquire wisdom, one must observe.

Success is achieved by developing our strengths, not by eliminating our weaknesses.

Know how and how much to tip people who expect gratuities, even in the case of poor service.

Being defeated is often a temporary condition. Giving up is what makes it permanent.

Working in an office with an array of electronic devices is like trying to get something done at home with half a dozen small children around. The calls for attention are constant.

Be able to hiccup silently, or at least without alerting neighbors to your situation. The first hiccup is an exception.

Be able to analyze statistics, which can be used to support or undercut almost any argument.

Skill is successfully walking a tightrope between the twin towers of New York's World Trade Center. Intelligence is not trying.

Know the official post office abbreviations for all 50 states without having to consult a list.

There's plenty of intelligence in the world, but the courage to do things differently is in short supply.

Sometimes we need a wise guide to peel back the ceiling of our lives to remind us that infinity never places any limits on our skies.

The secret of happiness is to find a congenial monotony.

Ceilings must always be considered. They are the most neglected surface in a room.

Usually, if you're buried alive, that's gonna be the last time that happens, isn't it?

Tennis is more than just a sport. It's an art, like the ballet. Or like a performance in the theater.

When you have a vision, you have to see it through, and you can make anything happen. You really can, especially in this [entertainment ] industry.

Conduct is the grand test of character. Words are one great evidence of the condition of the heart.

I've always felt more at home in the UK than in France.

I think it is important for people to understand that there are real serious economic costs and real serious economic damages associated with inaction on climate change.

Quiet! I'm expressing myself!