Perhaps there was a real King Arthur, who led the Britons against the Saxon invaders of their land, who was killed by his traitor nephew, and who was buried at Glastonbury,--the valley of Avilion of the legends; perhaps there was a slight historical nucleus around which all the romantic material was crystallising through the centuries, but the Arthur of romance came largely from the imagination of the early writers. And yet, though our "own ideal knight" may never have trod the soil of Britain or Roman or Saxon England, his chivalrous character and the knightly deeds of his followers are real to us, if we read them rightly, for "the poet's ideal was the truest truth." Though the sacred vessel--the Holy Grail--of the Christ's last supper with His disciples has not been borne about the earth in material form, to be seen only by those of stainless life and character, it is eternally true that the "pure in heart" are "blessed," "for they shall see God." This is what the Quest of the Holy Grail means, and there is still many a true Sir Galahad, who can say, as he did, "My strength is as the strength of ten, Because my heart is pure," and who attains the highest glory of knighthood, as before his clear vision "down dark tides the glory glides, And starlike mingles with the stars." We call these beautiful stories of long ago Stories of Chivalry, for, in the Middle Ages, chivalry influenced all that people did and said and thought. It began in the times of Charlemagne, a hundred years before our own King Alfred, and only very gradually it made its way through all the social order. Charlemagne was really a very great man, and because he was so, he left Western Europe a far better place to live in than he found it. Into the social life of his time he brought something like order and justice and peace, and so he greatly helped the Christian Church to do its work of teaching the rough and warlike Franks and Saxons and Normans the gentle ways of thrift and helpfulness. Charlemagne's "heerban," or call to arms, required that certain of his men should attend him on horseback, and this mounted service was the beginning of what is known as chivalry. The lesser nobles of each feudal chief served their overlords on horseback, _a cheval_, in times of war; they were called _knights_, which originally meant servants,--German _knechte_; and the system of knighthood, its rules, customs, and duties, was called chivalry,--French _chevalerie_.