"Now there is one outstandingly important fact regarding Spaceship Earth, and that is that no instruction book came with it."

“Up to now, the world of politics doesn't know that. That's why all nations are dependent on armaments, why we have the arms race.”

“Sum-totally, we find that the physical constituent of wealth-energy-cannot decrease and that the metaphysical constituent-know-how-can only increase. This is to say that everytime we use our wealth it increases.”

“Nature never "fails." Nature complies with its own laws. Nature is the law. When Man lacks understanding of Nature's laws and a Man-contrived structure buckles unexpectedly, it does not fail. It only demonstrates that Man did not understand Nature's laws and behaviors. Nothing failed. Man's knowledge or estimating was inadequate.”

“The new human networks' emergence represents the natural evolutionary expansion into the just completed, thirty-years-in-its-buildings world-embracing, physical communications network. The new reorienting of human networking constitutes the heart-and-mind-pumped flow of life and intellect into the world arteries.”

“Max Planck says, "The opposition never yields; they just die off." It's just a question of time. They are dying off.”

“I think it's absolutely touch-and-go whether we're going to make it. But the point is, for me to tell you that you have an option is not to be optimistic... Time and again, of course I am running into millions who don't know we have the option, because it's invisible, and I feel I have tremendous responsibility. So when people ask me to come and talk to them, I do my best to let them know they do have the option. Of course they're pessimistic, not knowing that.”