The man who has successfully solved the problem of his relations with the two worlds of data and symbols is a man who has no beliefs. With regard to the problems of practical life he entertains a series of working hypotheses, which serve his purposes, but are taken no more seriously than any other kind of tool or instrument. In other words, symbols should never be raised to the rank of dogmas, nor should any system be regarded as more than a provisional convenience.

The best way to find things out is not to ask questions at all. If you fire off a question, it is like firing off a gun - bang it goes

Today we are faced, I think, with the approach of what may be called the ultimate revolution, the final revolution, where man can act directly on the mind-body of his fellows.

Art and religion, carnivals and saturnalia, dancing and listening to oratory - all these have served, in H. G. Wells's phrase, as Doors in the Wall.

Of the significant and pleasurable experiences of life only the simplest are open indiscriminately to all. The rest cannot be had except by those who have undergone a suitable training.

In any race between human numbers and natural resources, time is against us.

Specialized meaninglessness has come to be regarded, in certain circles, as a kind of hallmark of true science.