People who work crossword puzzles know that if they stop making progress, they should put the puzzle down for a while.

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.

Scientists and creationists are always at odds, of course.

Common sense comes from experience, and kids need to fail as well as succeed in order to learn it. It's difficult to develop common sense when you spend a lot of time in your room where nothing much happens.

Just because you're unemployed doesn't mean you're not doing anything useful. You are, for example, at least keeping your mother-in-law's wit sharp.

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

The freedom to be an individual is the essence of America.