If mankind is to escape its programmed self-extinction the God who saves us will not descend from the machine: he will rise up again in the human soul.

I would die happy if I knew that on my tombstone could be written these words, "This man was an absolute fool. None of the disastrous things that he reluctantly predicted ever came to pass!"

However far modern science and techniques have fallen short of their inherent possibilities, they have taught mankind at least one lesson; nothing is impossible.

A certain amount of opposition is a great help to a man. Kites rise against, not with, the wind.

Do you want to know what I most regret about my youth? That I didn't dream more boldly and demand of myself more impossible things; for all one does in maturity is to carve in granite or porphyry the soap bubble one blew in youth! Oh to have dreamed harder!

Western society has accepted as unquestionable a technological imperative that is quite as arbitrary as the most primitive taboo: not merely the duty to foster invention and constantly to create technological novelties, but equally the duty to surrender to these novelties unconditionally, just because they are offered, without respect to their human consequences.

New York is the perfect model of a city, not the model of a perfect city.