which has passed like a pestilence through our own homes. After the schism Prussia could relapse into heathenry and erect an ethical system external to the whole culture of Christendom. But it can still be reasonably asked what begat the schism; and it can still be reasonably answered; something that went wrong with medievalism. But what was it that went wrong? When I looked for the last time on the towers of Zion I had a fixed fancy that I knew what it was. It is a thing that cannot be proved or disproved; it must sound merely an ignorant guess. But I believe myself that it died of disappointment. I believe the whole medieval society failed, because the heart went out of it with the loss of Jerusalem. Let it be observed that I do not say the loss of the war, or even the Crusade. For the war against Islam was not lost. The Moslem was overthrown in the real battle-field, which was Spain; he was menaced in Africa; his imperial power was already stricken and beginning slowly to decline. I do not mean the political calculations about a Mediterranean war. I do not even mean the Papal conceptions about the Holy War. I mean the purely popular picture of the Holy City. For while the aristocratic thing was a view, the vulgar thing was a vision; something with which all stories stop, something where the rainbow ends, something over the hills and far away. In Spain they had been victorious; but their castle was not even a castle in Spain. It was a castle east of the sun and west of the moon, and the fairy prince could find it no more. Indeed that idle image out of the nursery books fits it very exactly. For its mystery was and is in standing in the middle, or as they said in the very centre of the earth. It is east of the sun of Europe, which fills the world with a daylight of sanity, and ripens real and growing things. It is west of the moon of Asia, mysterious and archaic with its cold volcanoes, silver mirror for poets and a most fatal magnet for lunatics.