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.

The magnitude of an action may change not only the strength of its impact, but the direction. If you became a dentist, for example, you would certainly be an asset to our society. But what if everyone became a dentist? Who would bake the bread? Who would build the houses?

No one would choose to be jerked randomly off task again and again until you have half a dozen things you're trying to get done, all at the same time.

Have you ever noticed that when you must struggle to hear something, you close your eyes?

Avoid using cigarettes, alcohol, and drugs as alternatives to being an interesting person.

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

[Adulthood:] It's when you stop doing the stuff you have to make excuses for and when you stop making excuses for the stuff you have to do.