Some wars have been due to the lust of rulers for power and glory, or to revenge to wipe out the humiliation of a former defeat.

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

Our civilization is now in the transition stage between the age of warring empires and a new age of world unity and peace.

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

Measured in time of transport and communication, the whole round globe is now smaller than a small European country was a hundred years ago.

When the fabric of society is so rigid that it cannot change quickly enough, adjustments are achieved by social unrest and revolutions.

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