Wherefore the wearing of gold and the use of softer clothing is not to be entirely prohibited. But irrational impulses must be curbed, lest, carrying us away through excessive relaxation, they impel us to voluptuousness. For luxury, that has dashed on to surfeit, is prone to kick up its heels and toss its mane, and shake off the charioteer, the Instructor; who, pulling back the reins from far, leads and drives to salvation the human horse—that is, the irrational part of the soul—which is wildly bent on pleasures, and vicious appetites, and precious stones, and gold, and variety of dress, and other luxuries.