If you gamble long enough, you'll always lose -- the gambler is always ruined.

Geniuses never pay attention.

In our modern complex world, fundamentalism is dangerous because of its rigidity and its imperviousness to other ideas.

Working inspires inspiration. Keep working. If you succeed, keep working. If you fail, keep working. If you are interested, keep working. If you are bored, keep working.

Do you want to understand how to swim, or do you want to jump in and start swimming? Only people who are afraid of the water want to understand it. Other people jump in and get wet.

Reality is always greater - much greater - than what we know, than whatever we can say about it.

Face the facts, all these environmental organizations are thirty, forty, fifty years old. They have big buildings, big obligations, big staffs. They may trade on their youthful dreams, but the truth is, they're now part of the establishment. And the establishment works to preserve the status quo. It just does.