As long as man was small in numbers and limited in technology, he could realistically regard the earth as an infinite reservoir, an infinite source of inputs and an infinite cesspool for outputs. Today we can no longer make this assumption. Earth has become a space ship, not only in our imagination but also in the hard realities of the social, biological, and physical system in which man is enmeshed.

[In science any model depends on a pre-chosen taxonomy] a set of classifications into which we divide the enormous complexity of the real world... Land, labor, and capital are extremely heterogeneous aggregates, not much better than earth, air, fire, and water.

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.

[The question for the behavioral disciplines is simply] what is better, and how do we get there?

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

Accounting for the most part, remains a legalistic and traditional practice, almost immune to self-criticism by scientific methods.

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.