Mathematicians themselves set up standards of generality and elegance in their exposition which are a bar to understand.

The concept of need is often looked upon rather unfavorably by economists, in contrast with the concept of demand. Both, however, have their own strengths and weaknesses. The need concept is criticized as being too mechanical, as denying the autonomy and individuality of the human person, and as implying that the human being is a machine which "needs" fuel in the shape of food, engine dope in the shape of medicine, and spare parts provided by the surgeon.

Every culture, or subculture, is defined by a set of common values, that is, generally agreed upon preferences. Without a core of common values a culture cannot exist, and we classify society into cultures and subcultures precisely because it is possible to identify groups who have common values.

The most fundamental form of integrative power is the power of love.

The right to have children should be a marketable commodity, bought and traded by individuals but absolutely limited by the state.

The trouble with taxonomic boxes is... that that they tend to be empty, however beautiful they are on the outside.

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.