One of the most effective measures for weakening the enemy was the method of attacking the Central Powers from within by propaganda designed to incite the masses to rebellion and to drive wedges between Germany and Austria. As George Creel says, "The projectile force of the President's idealism, its full military value may be measured by the fact that between April 6 and December 8, 1917, sixteen States, great and small, declared war against Germany, or severed diplomatic relations with her. From the very first the Allies accepted the President as their spokesman." It was under the influence of Woodrow Wilson's clear vision and magic power of statement that the true significance of the war became clear. At first it had seemed a war of nations, and the belligerents had eagerly published official documents, Red Books, White Books, Yellow Books, and so forth, through all the colours of the spectrum, to show who had "started the war." The question of who began it became after a while quite secondary to the question of the fundamental principles at stake in the contest which was no longer a national conflict, but a world war, waged to the death between two irreconcilable views of the relationship of government to individuals, the autocratic view on the one hand, on the other the democratic. It was one man who brought the fundamental principle of the division into the clear light. A contemporary writer has said that the magical effect of Woodrow Wilson's utterances on all the Allies was due, not to his rhetoric but to his sublime gift of seeing and stating a profound truth after which others had been only groping. That is the prophet's power, to voice the latent, inarticulate aspirations of the multitude. Proof of the value of the President's method of attacking the Central Powers from within by propaganda was disclosed in General Ludendorff's and Von Tirpitz's revelations. In Ludendorff's opinion, the President's note to Germany had forced the Central Empires to yield to the President. Ludendorff says: In his answer to our second note, Wilson gave us nothing; he did not even tell us whether the Entente took its stand on the Fourteen Points. He demanded, however, the suspension of the submarine campaign, stigmatized our conduct of the war in the west as a violation of international law, and once again sought to meddle with intimate questions of our domestic politics. Speaking again of the answer to one of the Wilson notes, Ludendorff says: The answer to Wilson was dispatched on the 20th of October. The submarine campaign was abandoned. This concession to Wilson was the deepest blow to the army, and especially to the navy. The injury to the morale of the fleet must have been immeasurable. The Cabinet had thrown up the sponge. On October 23rd, President Wilson sent the following peremptory message to the Germans: