The basis of social relationships is reciprocity: if you cooperate with others, others will cooperate with you.

To know is not too demanding: it merely requires memory and time. But to understand is quite a different matter: it requires intellectual ability and training, a self conscious awareness of what one is doing, experience in techniques of analysis and synthesis, and above all, perspective.

When goods are exchanged between countries, they must be paid for by commodities or gold. They cannot be paid for by the notes, certificates, and checks of the purchaser's country, since these are of value only in the country of issue.

A community is made up of intimate relationships among diversified types of individuals--a kinship group, a local group, a neighborhood, a village, a large family.

The history of the last century shows, as we shall see later, that the advice given to governments by bankers, like the advice they gave to industrialists, was consistently good for bankers, but was often disastrous for governments, businessmen, and the people generally.

On this basis, which was originally financial and goes back to George Peabody, there grew up in the twentieth century a power structure between London and New York which penetrated deeply into university life, the press, and the practice of foreign policy.

It is clear that every civilization undergoes a process of historical change. We can see that a civilization comes into existence, passes through a long experience, and eventually goes out of existence.