In the time when St. Mark's was built there were no cheap Bibles, and, if there had been any, the poorer classes could not have read them. Thus the great Church was an endless boon to them, one which could never be quite exhausted. Many and splendid are the lessons these mosaics and pictures taught and continue to teach. The mysteries and beauties of the Bible are impressed upon the mind in a manner that cannot be effaced. All the virtues are there--Temperance quenching fire with water; Charity, mother of the virtues, and the last attained in human life; Patience; Modesty; Chastity; Prudence; Lowliness of Thought, Kindness, and Compassion; and Love which is Stronger than Death. These lessons the Venetians have continually before them, to help them to bear the troubles of this world, and giving them hope for the peace of another. Most of the pictures in mosaic are typically Byzantine, mainly symbolical and of the first school of design in Venice. Upon these pictures the people of Venice live and thrive spiritually: the pleasure is real and pure. Colour has a great influence upon the emotions, just as music has; and colour was used in the earliest times to stimulate devotion and repentance. There are pictures in which the most profound emotion is expressed. When one sees the pictures of Christ's life and passion, one cannot but be touched. By the medium of paintings in the churches, people began to understand and appreciate art, and to feel the need of it in their homes. Not only is St. Mark's an education to the poor and the ignorant: it is also an education to the student and to the artist. Here you have pictures of the nation of fishermen at their greatest period; also you find legends splendidly told, such as the story of the two merchants who brought the bones of St. Mark from Alexandria under cover of pork, crying "Swine! swine!" You see the priests, the Doge, and the people of Venice as they were in the days of her power. In one of the dim corners of St. Mark's is a statue of an old man on crutches with a finger on his lip. This is a Byzantine architect who was sent to Pietro Orseolo from Constantinople, as the cleverest Eastern builder of his time, to construct St. Mark's Church. He was a bow-legged dwarf, and undertook to build this marvellous edifice, unequalled in its beauty, on condition that a statue of himself should be placed in a conspicuous position in the Church. This was arranged. One day the Doge overheard the architect say that he could not execute the work in the way he had intended. "Then," said Orseolo, "I am absolved from my promise"; and he merely erected a small statue of the architect in a corner of the Church. [Illustration: ST. MARK'S PIAZZA]