Lastly there were the mystic symbolists, and it is they who have had most influence on pictorial art. There were those who, like Saint Bernard of Clairvaux, could discern through the darkened glass of Old Testament metaphor the divine facts of New Testament revelation, and those who, like Saint Mectilda of Germany, were favoured by Heaven with clear and detailed visions, in which Christ Himself deigned to explain the complicated symbolism of His surroundings, His embroidered robes and jewelled ornaments. And there were those mystics who were not in holy orders, who did not claim direct communication with Heaven, yet who have, nevertheless, by giving shape and colour to the vague indications of Holy Writ as to the future state, and by materializing, as it were, the illusive inner vision of things invisible, profoundly influenced the religious sentiment, if not the theology, of the world. Chief among them is the poet Dante, the friend of Giotto and the spiritual father of both the poets and the artists of the Italian Renaissance. In Germany his place was taken by Conrad von Würtzburg, a poet of infinitely less genius but who equally influenced his native art, at least as far as devotional representations of the Virgin Mary were concerned. He was a minnesinger who consecrated the last effort of a long life to praising the virtues of her whom he terms ‘The Empress of Heaven.’ About the year 1286 he wrote ‘The Golden Forge,’ which he describes as: ‘A golden song Forged in the smithy of my heart And beautifully inlaid With the jewelled thoughts of my heart.’ It is an eulogy of the Virgin, close-packed with allegory, simile and metaphor, which are borrowed for the greater part from the Fathers of the Church, but some few are of his own finding. His work was never to be compared with that of the great Italian, but it very strongly influenced the hymnology and the pictorial expression of the cult of the Virgin in both the Netherlands and Germany. In England there was no great symbolist among the early poets. They were plain tales of love and war that Chaucer told in ‘English undefyled.’ But the Church in England produced some beautiful mystical hymns, notably the one to the Virgin, written, perhaps, about 1350, which begins: ‘Of a rose, a lovely rose, Of a rose is al myn song.’ * * * * * Religious pictures are of two types: the historical, which aims at depicting a sacred scene exactly as it did occur; and the devotional, which presents a divine or holy figure in the attitude and with the surroundings best calculated to inflame the devotion of the worshipper.