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And from this instance of temperance it is, that we are most clearly given to understand the difference between the irrational and the rational faculties of the soul, and that it so plainly appears to us that the passions and affections of the mind are quite a distinct thing from reason. For otherwise never should we be able to distinguish continence from temperance, nor incontinence from intemperance, in lust and pleasures, if it were one and the same faculty of the soul wherewith we reason and judge, and whereby we desire and covet. Now temperance is that whereby reason governs and manages that part of the soul which is subject to the passions (as it were some wild creature brought up by hand, and made quite tame and gentle), having gained an absolute victory over all its appetites, and brought them entirely under the dominion of it. Whereas we call it continence, when reason has indeed gained the mastery over the appetites and prevailed against them, though not without great pains and trouble, they being perverse and continuing to struggle, as not having wholly submitted themselves; so that it is not without great difficulty able to preserve its government over them, being forced to retain and hold them in, and keep them within compass, as it were, with stripes, with the bit and bridle, while the mind all the time is full of nothing but agony, contentions, and confusion. All which Plato endeavors to illustrate by a similitude of the chariot-horses of the soul, the one whereof, being more unruly, not only kicks and flings at him that is more gentle and tractable, but also thereby so troubles and disorders the driver himself, that he is forced sometimes to hold him hard in, and sometimes again to give him his head, Lest from his hands the purple reins should slip, as Simonides speaks.
