[The loss-of-strength gradient is] the degree to which military and political power diminishes as we move a unit distance away from its home base.

In any evolutionary process, even in the arts, the search for novelty becomes corrupting.

As far as many statistical series that are related to activities of mankind are concerned, the date that divides human history into two equal parts is well within living memory. The world of today is as different from the world I was born in as that world was from Julius Caesar s. I was born in the middle of human history, to date, roughly. Almost as much has happened since I was born as happened before.

Any attempt to reduce the complex properties of biological organisms or of nervous systems or of human brains to simple physical and chemical systems is foolish.

It is almost as hard to define mathematics as it is to define economics, and one is tempted to fall back on the famous old definition attributed to Jacob Viner, "Economics is what economists do," and say that mathematics is what mathematicians do. A large part of mathematics deals with the formal relations of quantities or numbers.

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

[The loss-of-strength gradient is] the degree to which military and political power diminishes as we move a unit distance away from its home base.