Physicists only talk to physicists, economists to economists-worse still, nuclear physicists only talk to nuclear physicists and econometricians to econometricians. One wonders sometimes if science will not grind to a stop in an assemblage of walled-in hermits, each mumbling to himself words in a private language that only he can understand.

There is no such thing as economics, only social science applied to economic problems.

The organization of science into disciplines sets up a series of ghettos with remarkable distances of artificial social space between them.

In view of the importance of philanthropy in our society, it is surprising that so little attention has been given to it by economic or social theorists. In economic theory, especially, the subject is almost completely ignored. This is not, I think, because economists regard mankind as basically selfish or even because economic man is supposed to act only in his self-interest; it is rather because economics has essentially grown up around the phenomenon of exchange and its theoretical structure rests heavily on this process.

A world of unseen dictatorship is conceivable, still using the forms of democratic government.

[Peace praxis is] a peace process that deals with conflict integratively.

Theories without facts may be barren, but facts without theories are meaningless.