other birds in captivity, as the mob besieged and captured the almost empty Bastille, merely because it was the fortress of a historic tyranny. And rats have never been known to die by thousands merely in order to visit a particular trap in which a particular rat had perished, as the poor peasants of the First Crusade died in thousands for a far-off sight of the Sepulchre or a fragment of the true cross. In this sense indeed the Crusade was not rationalistic, if the rat is the only rationalist. But it will seem more truly rational to point out that the inspiration of such a crowd is not in such instincts as we share with the animals, but precisely in such ideas as the animals never (with all their virtues) understand. What is peculiar about the First Crusade is that it was in quite a new and abnormal sense a popular movement. I might almost say it was the only popular movement there ever was in the world. For it was not a thing which the populace followed; it was actually a thing which the populace led. It was not only essentially a revolution, but it was the only revolution I know of in which the masses began by acting alone, and practically without any support from any of the classes. When they had acted, the classes came in; and it is perfectly true, and indeed only natural, that the masses alone failed where the two together succeeded. But it was the uneducated who educated the educated. The case of the Crusade is emphatically not a case in which certain ideas were first suggested by a few philosophers, and then preached by demagogues to the democracy. This was to a great extent true of the French Revolution; it was probably yet more true of the Russian Revolution; and we need not here pause upon the fine shade of difference that Rousseau was right and Karl Marx was wrong. In the First Crusade it was the ordinary man who was right or wrong. He came out in a fury at the insult to his own little images or private prayers, as if he had come out to fight with his own domestic poker or private carving-knife. He was not armed with new weapons of wit and logic served round from the arsenal of an academy. There was any amount of wit and logic in the academies of the Middle Ages; but the typical leader of the Crusade was not Abelard or Aquinas but Peter the Hermit, who can hardly be called even a popular leader, but rather a popular flag. And it was his army, or rather his enormous rabble, that first marched across the world to die for the deliverance of Jerusalem.