Some think the worst horrors of war might be avoided by an international agreement not to use atomic bombs. This is a vain hope.

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

After the First World War the economic problem was no longer one of production. It was the problem of finding markets to get the output of industry and agriculture dispersed and consumed.

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

Nearly every country in the world is now becoming industrialized as rapidly as it can.

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.

In the last fifty years science has advanced more than in the 2,000 previous years and given mankind greater powers over the forces of nature than the ancients ascribed to their gods.