The future is bound to surprise us, but we don't have to be dumbfounded.

Are we to regard the world of nature simply as a storehouse to be robbed for the immediate benefit of man? ... Does man have any responsibility for the preservation of a decent balance in nature, for the preservation of rare species, or even for the indefinite continuance of his race?

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

Perhaps the most difficult ethical problem of the scientific community arises not so much from conflict with other subcultures as from its own success. Nothing fails like success because we don't learn from it. We learn only from failure.

Anyone who believes exponential growth can go on forever in a finite world is either a madman or an economist.

The controversy as to whether socialism is possible has been settled by the fact that it exists, and it is a fundamental axiom of my philosophy, at any rate, that anything that exists, is possible.

Almost every organization... exhibits two faces a smiling face which it turns toward its members and a frowning face which it turns to the world outside.