Given to the study of books as a child, Charles was an ascetic of exaggerated piety who sought spirituality by mortifying the flesh. Like Thomas à Becket, he wore unwashed clothes crawling with lice; he put pebbles in his shoes, slept on straw on the floor next to his wife’s bed, and after his death was found to have worn a coarse shirt of horsehair under his armor, and cords wound so tightly around his body that the knots dug into his flesh. By these practices a seeker of holiness expressed contempt for the world, self-abasement, and humility, although he often found himself guilty of a
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