The latter, indeed, considered the virtue of obedience as the one most calculated to ensure rapid advance in the spiritual life. He tells us that one day at table someone having boasted that he could make an egg stand upright on a plate, a thing which those present, forgetting Christopher Columbus, insisted was impossible, the Saint, as Columbus had done, quietly taking one up chipped it a little at one end, and so made it stand. The company all cried out that there was nothing very great in that trick. "No," repeated the Saint, "but all the same you did not know it." We may say the same, adds Camus, of obedience: it is the true secret of perfection, and yet few people know it to be so. From what we have already seen of the character of John Peter Camus, we may imagine that gentleness was the most difficult for him to copy of the virtues of St. Francis de Sales; yet steel, though much stronger than iron, is at the same time far more readily tempered. Thus, in his dealings with his neighbour he behaved exactly like his model, so much so, that for anyone who wanted to gain his favour the best plan was to offend him or do him some injury. I have spoken of his love of mortification, and a short extract from the funeral discourse pronounced over his remains will show to what extent he practised it. Godeau says: "Our virtuous Bishop up to the very last years of his life, slept either on a bed of vine shoots, or on boards, or on straw. This custom he only abandoned in obedience to his director, and in doing so I consider that he accomplished what was far more difficult and painful than the mortifications which he had planned for himself, since the sacrifice of our own will in these matters is incomparably more disagreeable to us than the practising of them." This austerity in respect to sleep, of which, indeed, he required more than others on account of his excitable temperament, did not suffice to satisfy his love for penance, without which, he said, the leading of a Christian and much more of an episcopal life was impossible. To bring his body into subjection he constantly made use of hair-shirts, iron belts, vigils, fasting, and the discipline, and it was not until his last illness that he gave up those practices of austerity. He concealed them, however, as carefully as though he had been ashamed of them, knowing well that such sacrifices if not offered in secret, partake more of the spirit of Pharisaism than of the gospel. This humility, notwithstanding, he was unable to guard against the pardonable curiosity of his servants. One of them, quite a young man, who was his personal attendant during the first years of his residence at Belley, observing that he wore round his neck the key of a large cupboard, and being very anxious to know what it contained, managed in some way to possess himself of this key for a few moments, when his master had laid it aside, and was not in the room.