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103 certain old forms, failing to see that the new content is breaking its way through all and every form, that it is our duty as Communists to master them all, to learn how to supplement, with the maximum rapidity, one form by another, and to adapt our tactics to all such changes, caused not by our class nor by our endeavors.

World revolution has been given a powerful impetus by the horrors, atrocities and villainies of the world imperialist war, and by the hopelessness of the position created by it. This revolution is spreading more widely and deeply with such supreme rapidity, with such splendid richness of varying forms, with such an instructive, practical refutation of all doctrinairism, that there is every hope of a speedy and thorough recovery of the international Communist movement from the infantile disorder of "Left" Communism.

April 27, 1920.