Ulysses rectified the unevenness of the nuptial couch with a stone. Such frugality and self-help was practised not by private individuals alone, but by the chiefs of the ancient Greeks. But why speak of these? Jacob slept on the ground, and a stone served him for a pillow; and then was he counted worthy to behold the vision—that was above man. And in conformity with reason, the bed which we use must be simple and frugal, and so constructed that, by avoiding the extremes [of too much indulgence and too much endurance], it may be comfortable: if it is warm, to protect us; if cold, to warm us. But let not the couch be elaborate, and let it have smooth feet; for elaborate turnings form occasionally paths for creeping things which twine themselves about the incisions of the work, and do not slip off.