A longing went through the world, stimulating faith in miracles and a desire for adventure, a longing which no soul could resist. Nothing certain was known of countries fifty miles distant; the traveller must be prepared for the most amazing events. No one knew what fate awaited him behind yonder blue mountains. The existence of natural laws was undreamt of; there was no improbability in dragons or lions possessing power of speech. A period incapable of distinguishing between the natural and supernatural will always indulge in those fancies which are best suited to its temper. Be the native country never so poor, the long darkness and cold of the winter never so hard to bear, far away in the East, or in Camelot, the kingdom of King Arthur, life was full of beauty and sunshine. The legends of King Arthur powerfully affected the imagination; they were read, secretly and surreptitiously, in all convents; on a sultry summer afternoon, during the learned discussion of their preceptor, one after another of the pupils would fall asleep; the preceptor, suddenly interrupting himself, would continue after a short pause: "And now I will tell you of King Arthur," and all eyes would sparkle as the pupils listened with rapt attention. Francis of Assisi called one of his disciples "a knight of his Round Table," and three hundred years later Don Quixote lost his reason over the study of those legends; some of the finest works of art of the present time, Wagner's "Lohengrin," "Tristan and Isolde," and "Parsifal," take their subject from the inexhaustible treasure of the Celtic epic cycle. The longing for experience and adventure had laid hold of the imagination to an extraordinary degree. The recital of wondrous adventures no longer satisfied the listener; he yearned to participate in them. The young knight, trained in athletics and courtesy, and possessing a little knowledge of biblical history, left his father's castle to face the unknown world. There was a sanctuary, mysterious, almost supernal, carefully guarded in the dense forest of an inaccessible mountain. A knight whose heart was pure, and who had dedicated himself to the lifelong service of the divine, could find it; but he would have to wander for many years, through forests and glens and strange countries, alone and solitary, before his eyes would behold the most sacred relic in the world, the Holy Grail.

The time was ripe for a great event, a universal and overwhelming enterprise which could absorb the passionate longing. Maybe that the wisdom of the great popes—half unconsciously, certainly, and under the pressure of the age, but yet led by an unerring instinct—guided this stream into the bed of the Church; the vague craving found a definite object: the Crusades were organised. The Holy Sepulchre, the most sacred spot on earth, was in the hands of the heathens; it was despised and defiled—what greater thing could a man do than hasten to its rescue and wrest it from the grasp of pagans, giants and sorcerers? In the fantastic imagination of the men of that period the Lord's sepulchre was nothing but the earthly realisation of their yearning for the Holy Grail.

As far back as a.d. 1000 Gerbert had sent messengers to all nations, exhorting them to hoist their banners and march with him to the Holy Land. It had been prophesied that he should be the first to read Mass in Jerusalem; a few ships were actually equipped at Pisa—the first attempt at a Crusade. But at that time Europe was not yet quite prepared for the extraordinary, almost incomprehensible, enterprise—the conquest of a country which hardly anybody had ever seen and in which nobody had any practical interest. Before such an enterprise could be carried out all hearts must be filled by that uncontrollable and yet vague longing, so characteristic of the great period of fantasy. The suggestion that the wealth of the East, exciting the greed of the western nations, led to the Crusades, is an absolutely indefensible idea. Doubtless, rumours of the fabulous treasure of the Orient had stirred the imagination of Europe, appealing far less, however, to the cupidity of the individual than to his desire for something strange, new and incredible. It was impossible to foresee the result of the first Crusade; the crusader went to a strange land in order to fight—the return was in God's hand. There have been at all times men coveting wealth, but to make such men the instigators and organisers of the Crusades is a deliberate attempt to represent a characteristic and unique event in the history of the world in the light of a commonplace and every-day occurrence. In the first enchanted wood a man might chance upon a beautiful princess sitting beside a fountain, nude and weeping; but it was equally possible that a giant would rush upon the Christian knight, break his shield and exact heavy penalties. It was possible to win the kingdom of a sultan or emir—it could be achieved by bravery and in a duel—and become a great king, for a king in those days was no more than a large landed proprietor. Such dreams were actually fulfilled in the most extraordinary way. Gottfried of Bouillon, a poor Alsatian knight, might have become King of Jerusalem, had he not refused to wear a crown of gold in a land where his Saviour had worn a crown of thorns, and contented himself with the title of "Protector of the Holy Land."

The embattled citadel of Jerusalem, like the Holy Grail, was pictured as being situated outside the world. There the longing which had become so vast that it had outgrown the earth, would be stilled. A direct way must lead from Jerusalem, the centre of the earth—it still takes this position in Dante's Divine Comedy—to Paradise. Was it not the spot where the Cross of the Saviour had been raised? Had not once before heaven opened above the city to receive His risen body? Was it not the scene of countless miracles in the past? Why should it be different now? Men knew practically nothing of Palestine; they had in their minds a fantastic picture tallying, in every respect, with Biblical accounts; doubtless, the footprints of the Redeemer could easily be traced everywhere; the possession of the country promised the fulfilment of transcendental dreams.

The impulse and the strength necessary for the organisation of the Crusades were spiritual phenomena inherently foreign and even hostile to the Church; but thanks to the mental superiority of the popes of that period, and the overpowering conception of a divine kingdom, they became the instruments of the greatest triumphs vouchsafed to the Church of Rome. The hosts, driven across the sea by inner restlessness and ill-defined longing, in reality fought for the aggrandisement of the Church. The great Hildebrand resolved to lead all Christendom to Jerusalem, to found on the site of the Holy Sepulchre the divine kingdom preached by St. Augustine, and invest—a risen Christ—the emperor and all the kings of the earth with their kingdoms.

The crusader and the knight in quest of the Holy Grail present together a paradoxical combination of the Christian-ecclesiastical and the mundane-chivalric spirit, which is quite in harmony with the spirit of the age. These two worlds, inward strangers, formed—in the Order of the Knight-Templars, for instance—a union which, while possessing all the external symbols of chivalry, attributed to it heterogeneous, ecclesiastical motives; the glory of battle and victory, the caprice of a beautiful damsel, were no longer to become the mainsprings of doughty exploits; henceforth the knight fought solely for the glory of God and the victory of Christianity. In addition to King Arthur's knights, the classical Middle Ages worshipped the ideal of these priestly warriors who waded through streams of blood to kneel humbly at the grave of the Saviour, of those seekers of the Holy Grail who dedicated themselves to a metaphysical task. King Arthur's Round Table served the actual orders of knighthood as a model. Not only the Franciscans of Italy, but also slow, German mystics, such as Suso and the profound Johannes Tauler, delighted in borrowing their similes and metaphors from knighthood. Tauler speaks of the "scarlet knightly robes" which Christ received for His "knightly devotion": "And by His chivalric exploits he won those knightly weapons which he wears before the Father and the angelic knighthood. Therefore Christ exults when His knights elect also to put on such knightly garments ...," etc.

Not infrequently the Saracens behaved far more generously than the Christian armies. A German chronicler, Albert von Stade, tells us that a.d. 1221 "the Sultan of Egypt of his own free will restored the Lord's Cross, permitted the Christians to leave Egypt with all their belongings, and commanded all prisoners to be set free, so that at that time 30,000 captives were released. He also commanded his subjects to sell food to the rich and give alms to the poor and the sick." Occasionally the pope entered into an alliance with the enemies of Christendom against the emperor, if the latter proved troublesome. a.d. 1246 the Sultan of Egypt (Malek as Saleh Ejul) taught Innocent IV., the speaker of all Christendom, the judge of the Christian peoples, the following lesson: "It is not befitting to us," he wrote to him, "that we should make a treaty with the Christians without the counsel and consent of the emperor. And we have written to our ambassador at the court of the emperor, informing him of what has been proposed to us by the Pope's nuncio, including your message and suggestions."

The most pathetic symptom of the restlessness of the age was the Children's Crusade in 1212, which, even at its actual occurrence, caused helpless amazement. The reports of two German chroniclers are sufficiently interesting to be quoted verbally: "In the same year happened a very strange thing, a thing which was all the more strange because it was unheard of since the creation of the world. At Easter and Whitsuntide many thousands of boys from Franconia and Teutonia, from six years upwards, took the Cross without any external inducement or preaching, and against the wish of their parents and relations, who sought to restrain them. Some left the plough which they had been guiding, others abandoned their flocks, or any other task which they had been set to do, banded together, and with hoisted banner began to march to Jerusalem, in batches of twenty, fifty and a hundred. Many people enquired of them at whose counsel and admonishment they were undertaking this journey, (for it was not many years ago that many kings, a great number of princes and countless people had travelled to the Holy Land, strongly armed, and had returned home without having accomplished their desire,) telling them that in their tender years they had not yet sufficient strength to achieve anything, and that therefore this thing was foolish and undertaken without due consideration; the children answered briefly that they were obeying God's will, and would willingly and gladly suffer all the trials He would send them. And they went their way, some turning back at Mayence, others at Piacenza, and others at Rome; a small number arrived at Marseilles, but whether they crossed the sea or not, and what happened to them, no one knows; only that much is certain, that of all the thousands who went forth, only very few returned." Another chronicler wrote: "And at this time boys without a leader or guide, left the towns and villages of all countries, eagerly journeying to the lands across the sea, and when asked whither they were wending, they replied: 'To Jerusalem, to the Holy Land.' Many of them were kept by their parents behind locked doors, but they burst open the doors, broke through the walls and escaped. When the Pope heard of these things he sighed heavily and said: 'These children shame us, for they hasten to the recovery of the Holy Land while we sleep.' No one knows how far they went and what became of them. But many returned, and when they were asked the reason of their expedition, they said they knew not. At the same time nude women were seen hurrying through towns and villages, speaking no word."

If it had not been for the Crusades, something else must have happened to relieve the unbearable tension. The world was longing for a great deed, a deed overstepping the border-line of metaphysics, and its enthusiasm was sufficient guarantee of achievement. In the case of the individual, vanity and boastfulness played no mean part. Thus the Austrian minnesinger, Ulrich of Lichtenstein, proposed taking the Cross "not to serve God but to please his mistress." It is quite probable, though not historically proved, that this veritable Don Quixote dreamed of decorating the Holy Sepulchre with his lady's handkerchief, but in the end he remained at home. A journey to foreign lands, to return after years of yearning for the beloved, her loyalty, or her treachery, supplied the romantic imagination of the age with endless material. The story of the Count von Gleichen and his two wives is famous to this day. A charming Provençal song tells of a maid who, day after day, sat by a fountain weeping for her lover. At this spot they had bidden farewell to each other, and here she was awaiting his return. One day a pilgrim arrived, and she at once asked for news of her knight. The pilgrim knew him and had a message for her. After a short conversation he threw back his cowl and drew the delighted maiden into his arms, for it was he himself, her lover, who after many years of absence had returned and was first visiting the spot where, years ago, he had said good-bye to her.

But there was another motive, a religious one, which, joined to the universal lust of adventure, dominated the whole mediaeval period to an extraordinary degree; that motive was the idea of doing penance and—after all the failures of life—returning to God. The Crusades offered an opportunity for combining one's heart's desire with this spiritual need. Of all good works there were none more pleasing to God, and every participator was promised forgiveness of his sins. In the troubadours' songs of the crusaders there is a strong yearning for penance and sanctification, quite independent of the idea of the delivery of the Holy Sepulchre from the rule of the infidels.