“Humans may progress. They may think that they are moving forward because they have invented clever machines and because they control the land and sea. But man's capacity to inflict and endure pain is constant. Man's desire for power, to beat down his competition - it hasn't changed in the slightest.”

“When man invented the bicycle he reached the peak of his attainments. Here was a machine of precision and balance for the convenience of man. And (unlike subsequent inventions for man's convenience) the more he used it, the fitter his body became. Here, for once, was a product of man's brain that was entirely beneficial to those who used it, and of no harm or irritation to others. Progress should have stopped when man invented the bicycle. ”

“This you may say of man - when theories change and crash, when schools, philosophies, when narrow dark alleys of thought, national, religious, economic, grow and disintegrate, man reaches, stumbles forward, painfully, mistakenly sometimes. Having stepped forward, he may slip back, but only half a step, never the full step back.”

“We may have doubts, but we control the present. We always have the choice to move forward with hope and confidence.”

“However low he may fall, a man can never deny himself the delight of feeling cleverer, more powerful or even better fed than his companions.”

“Of all human inventions the organization, a machine constructed of people performing interdependent functions, is the most powerful. Because it is so powerful, the organization is more dangerous than any other human invention, including nuclear fission (itself the product of an organized scientific project).”