It is true that the techniques of war are constantly "improved" as the genius of an age of invention is put in the service of the war machine. But that is not what is most disturbing. What is revolutionary is that the minds of men, women and children are being deliberately trained, directed, distorted, by every conceivable instrument of education and propaganda, to make them tolerant of war, receptive of war, prepared for war, lovers of war. The greatest menace in the world is not poison gas. There are gas masks against that. The menace is poisoned words, poisoned ideas.

"Dilemma of a Pacifist"(1937)