[The notion of equilibrium] is a notion which can be employed usefully in varying degrees of looseness. It is an absolutely indispensable part of the toolbag of the economist and one which he can often contribute usefully to other sciences which are occasionally apt to get lost in the trackless exfoliations of purely dynamic systems.

The process of consumption is the final act in the economic drama.

In calling society an ecological system we are not merely using an analogy; society is an example of the general concept of an "ecosystem" that is, an ecological system of which biological systems - forests, fields, swamps - are other examples.

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

The human experience can almost be summed up in the observation that, whereas all decisions are of the past, all decisions are about the future. The image of the future, therefore, is the key to all choice-oriented behavior. The character and quality of the images of the future which prevail in a society is therefore the most important clue to its overall dynamics.

The illusion that consumption - and its correlative, income - is desirable probably stems from too great preoccupation with what Knight calls "one-use goods," such as food and fuel, where the utilization and consumption of the good are tightly bound together in a single act or event. ... any economy in the consumption of fuel that enables us to maintain warmth or to generate power with lessened consumption again leaves us better off. ... there is no great value in consumption itself.

Economic progress means the discovery and application of better ways of doing things to satisfy our wants. The piping of water to a household that previously dragged it from a well, the growing of two blades of grass where one grew before, the development of a power loom that enables one man to weave ten times as much as he could before, the use of steam power and electric power instead of horse or human power - all these things clearly represent economic progress.