"This exceeding precious gem, amongst these its powers and virtues, possesseth this property besides. It cannot be seen out of hand, save by one whose eyesight is strong and sound, and his body pure and thoroughly undefiled. If any man, lacking in these two good qualities, do rashly gaze upon this precious stone, he shall, I suppose lose even the eyesight that he hath, and his wits as well. Now I, that am initiated in the physician's art, observe that thine eyes are not healthy, and I fear lest I may cause thee to lose even the eyesight that thou hast. But of the king's son, I have heard that he leadeth a sober life, and that his eyes are young and fair, and healthy. Wherefore to him I make bold to display this treasure. Be not thou then negligent herein, nor rob thy master of so wondrous a boon." The other answered, "If this be so, in no wise show me the gem; for my life hath been polluted by many sins, and also, as thou sayest, I am not possest of good eyesight. But I am won by thy words, and will not hesitate to make known these things unto my lord the prince." So saying, he went in, and, word by word, reported everything to the king's son. He, hearing his tutor's words, felt a strange joy and spiritual gladness breathing into his heart, and, like one inspired, bade bring in the man forthwith. So when Barlaam was come in, and had in due order wished him Peace!, the prince bade him be seated. Then his tutor withdrew, and Ioasaph said unto the elder, "Shew me the precious gem, concerning which, as my tutor hath narrated, thou tellest such great and marvellous tales." Then began Barlaam to discourse with him thus: "It is not fitting, O prince, that I should say anything falsely or unadvisedly to thine excellent majesty. All that hath been signified to thee from me is true and may not be gainsaid. But, except I first make trial of thy mind, it is not lawful to declare to thee this mystery; for my master saith, 'There went out a sower to sow his seed: and, as he sowed, some seeds fell by the wayside, and the fowls of the air came and devoured them up: some fell upon stony places, where they had not much earth: and forthwith they sprang up, because they had no deepness of earth: and when the sun was up, they were scorched: and because they had no root, they withered away. And some fell among thorns; and the thorns sprung up and choked them: but others fell upon good ground, and brought forth fruit an hundredfold.' Now, if I find in thine heart fruit-bearing ground, and good, I shall not be slow to plant therein the heavenly seed, and manifest to thee the mighty mystery. But and if the ground be stony and thorny, and the wayside trodden down by all who will, it were better never to let fall this seed of salvation, nor to cast it for a prey to fowls and beasts, before which I have been charged not to cast pearls. But I am 'persuaded better things of thee, and things that accompany salvation,'--how that thou shalt see the