The history of our civilization has been one of intermittent war.

As we have seen, the wireless and the airplane have made the world so small and nations so dependent on each other that the only alternative to war is the United States of the World.

Empires won by conquest have always fallen either by revolt within or by defeat by a rival.

When the Industrial Revolution of the nineteenth century brought a rapid increase in wealth, the demand of workers for a fair share of the wealth they were creating was conceded only after riots and strikes.

Our civilization has evolved through the continuous adjustment of society to the stimulus of new knowledge.

In recent times, European nations, with the use of gunpowder and other technical improvements in warfare, controlled practically the whole world. One, the British Empire, brought under one government a quarter of the earth and its inhabitants.

The history of our civilization has been one of intermittent war.