Human beings are the only creatures on the planet that tell time and think they have to earn a living.

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.

Whatever humans have learned had to be learned as a consequence only of trial and error experience. Humans have learned only through mistakes.

Nature does have manure and she does have roots as well as blossoms, and you can't hate the manure and blame the roots for not being blossoms.

A designer is an emerging synthesis of artist, inventor, mechanic, objective economist and evolutionary strategist.

If we do more with less, our response will be adequate to take care of everybody.

Humans beings always do the most intelligent thing…after they’ve tried every stupid alternative and none of them have worked