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

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

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

Be able to decline a date so gracefully that the person isn't embarrassed that he or she asked.

When you're in a good mood, bring up the past. When you're in a bad mood, stick to the present. And when you're not feeling emotional at all, it's time to talk about the future.

Evolution has long been the target of illogical arguments that use presumption.

Be able to keep a secret or promise when you know in your heart that it is the right thing to do.