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?

Many people feel they must multi-task because everybody else is multitasking, but this is partly because they are all interrupting each other so much.

Attention-deficit disorders seem to abound in modern society, and we don't know the cause.

Think of a hypothesis as a card. A theory is a house made of hypotheses.

Capital punishment is the source of many an argument, both good and bad.

Although spoken English doesn't obey the rules of written language, a person who doesn't know the rules thoroughly is at a great disadvantage.

If you never heard opportunity knock, maybe you're never at home.