In fact, violence as a symbol of our growing irrationality has had an increasing role in activity for its own sake, when no possible justification could be made that the activity was seeking to resolve a problem.

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.

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

One of the chief reasons for the widespread fear of the Huns rested on their ability to travel very long distances in relatively short periods. This ability may well have been based on their use of horseshoes.

It is also in theory, conceivable that some universal empire some day might cover the whole globe, leaving no external "barbarians" to serve as invaders.

In fact, violence as a symbol of our growing irrationality has had an increasing role in activity for its own sake, when no possible justification could be made that the activity was seeking to resolve a problem.

Inflation, especially a slow steady rise in prices, encourages producers, because it means that they can commit themselves to costs of production on one price level and then, later, offer the finished product for sale at a somewhat higher price level. This situation encourages production because it gives confidence of an almost certain profit margin.