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

There can be no peace in the world so long as a large proportion of the population lack the necessities of life and believe that a change of the political and economic system will make them available. World peace must be based on world plenty.

The increase of territory and power of empires by force of arms has been the policy of all great powers, and it has always been possible to get the approval of their state religion.

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

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

Knowledge acquired in biological research is seldom directly applicable to human beings ... The results of scientific research, obtained under these conditions, cannot be applied directly to human beings who vary widely in their hereditary make-up, in their environment, and in their past health record.

We are now physically, politically, and economically one world and nations so interdependent that the absolute national sovereignty of nations is no longer possible.