Physicists can only talk to other physicists and economists to economists... sociologists often cannot even understand each other.

The troubles of the 20th century are not unlike those of adolescence -- rapid growth beyond the ability of organizations to manage, uncontrollable emotion, and a desperate search for identity. Out of adolescence, however, comes maturity in which physical growth with all its attendant difficulties comes to an end, but in which growth continues in knowledge, in spirit, in community, and in love; it is to this that we look forward as a human race. This goal, once seen with our eyes, will draw our faltering feet toward it.

Conventions of generality and mathematical elegance may be just as much barriers to the attainment and diffusion of knowledge as may contentment with particularity and literary vagueness... It may well be that the slovenly and literary borderland between economics and sociology will be the most fruitful building ground during the years to come and that mathematical economics will remain too flawless in its perfection to be very fruitful.

It [knowledge] is clearly related to information, which we can now measure; and an economist especially is tempted to regard knowledge as a kind of capital structure, corresponding to information as an income flow. Knowledge, that is to say, is some kind of improbable structure or stock made up essentially of patterns - that is, improbable arrangements, and the more improbable the arrangements, we might suppose, the more knowledge there is.

We never like to admit to ourselves that we have made a mistake. Organizational structures tend to accentuate this source of failure of information.

The economy of the future might be called the "spaceman economy," in which the earth has become a single spaceship, without unlimited reservoirs of anything.

[The consumer is] the supreme mover of economic order... for whom all goods are made and towards whom all economic activity is directed.