Know this: though love is weak and hate is strong, Yet hate is short, and love is very long.

Are we to regard the world of nature simply as a storehouse to be robbed for the immediate benefit of man?

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.

We should always bear in mind that numbers represent a simplification of reality.

What exists, is possible.

Economics, we learn in the history of thought, only became a science by escaping from the casuistry and moralizing of medieval thought.

Human artifacts not only include material structures and objects, such as buildings, machines, and automobiles, but they also include organizations, organizational structures like extended families . . . tribes, nations, corporations, churches, political parties, governments, and so on. Some of these may grow unconsciously, but they all originate and are sustained by the images in the human mind.