Our little Spaceship Earth is only eight thousand miles in diameter, which is almost a negligible dimension in the great vastness of space.... Spaceship Earth was so extraordinarily well invented and designed that to our knowledge humans have been on board it for two million years not even knowing that they were on board a ship.

It is one of the strange facts of experience that when we try to think about the future, our thoughts jump backwards. It may well be that nature has some fundamental metaphysical law by which opening up what we call the future also opens up the past in equal degree.

However, if we leave the industrial machinery and their energy-distribution networks and leave them also all the people who have routine jobs operating the industrial machinery and distributing its products, and we take away from all the industrial countries all their ideologies and all the politicians and political machine workers, people would keep right on eating. Possibly getting on a little better than before.

You can never learn less; you can only learn more.

Nature is a totally efficient, self-regenerati ng system. IF we discover the laws that govern this system and live synergistically within them, sustainability will follow and humankind will be a success.

Man is going to be displaced altogether as a specialist by the computer. Man himself is being forced to reestablish, employ, and enjoy his innate 'comprehensivity.

Conceptuality is subjective; realization is objective.