“The Emperor Justinian and the architects Anthemius and Isidorus used many devices to construct so lofty a church with security. One of these I will now explain, by which a man may form some opinion of the strength of the whole work; as for the others I am not able to discover them all, and find it impossible to describe them in words. It is as follows: The piers, of which I just now spoke, are not constructed in the same manner as the rest of the building; but in this fashion; they consist of quadrangular courses of stone, rough by nature, and made smooth by art; of these stones, those which make the projecting angles of the pier are cut angularly (_engonios_), while those which go in the middle parts of the sides are cut square (_tetragonos_). “They are fastened together not with lime (_titanos_), called ‘unslaked’ (_asbestos_), not with asphaltum, the boast of Semiramis at Babylon, nor anything of the kind, but with lead, which, poured into the interstices, has sunk into the joints of the stones, and binds them together; this is how they are built. “Let us now proceed to describe the remaining parts of the church. The entire ceiling is covered with pure gold, which adds to its glory, though the reflections of the gold upon the marble surpass it in beauty. There are two aisles one above another on each side, which do not in any way lessen the size of the church, but add to its width. In length they reach quite to the ends of the building, but in height they fall short of it; these also have domed ceilings adorned with gold. Of these two porticoes one [ground floor] is set apart for male and the other [upper floor] for female worshippers; there is no variety in them, nor do they differ in any respect from one another, but their very equality and similarity add to the beauty of the church. Who could describe these gynaeceum galleries, or the numerous porticoes (_stoai_) and cloistered courts (_peristuloi aulai_) with which the church is surrounded? Who could tell of the beauty of the columns and marbles with which the church is adorned? One would think that one had come upon a meadow full of flowers in bloom! Who would not admire the purple tints of some, and the green of others, the glowing red and the glittering white, and those too, which nature, painter-like, has marked with the strongest contrasts of colour? Whoever enters there to worship perceives at once that it is not by any human strength or skill, but by the favour of God, that this work has been perfected; the mind rises sublime to commune with God, feeling that He cannot be far off, but must especially love to dwell in the place which He has chosen; and this is felt not only when a man sees it for the first time, but it always makes the same impression upon him, as though he had never beheld it before. No one ever became weary of this spectacle, but those who are in the church delight in what they see, and, when they leave, magnify it in their talk.