In politics, the tripod is he most unstable of all structures. It's be bad enough without the complication of a feudal trade culture which turns its back on most science.

The mind commands the body and it obeys. The mind orders itself and meets resistance.

What you cannot control, you must accept.

Every civilization depends on the quality of the individuals it produces. If you over-organize humans, over-legalize them, suppress their urge to greatness-they cannot work and their civilization collapses.

If all those around you believe some particular thing, you will soon be tempted to share in that belief.

Once human beings realize something can be done, they're not satisfied until they've done it.

He who controls the spice controls the universe.