Philo: Allegorical Interpretation, III

XLIV. (128) Aaron, therefore, for he is a second Moses, restraining the breast, that is to say, the angry passions, does not allow them to be carried away by undistinguishing impulse, fearing lest, if they obtain complete liberty, they may become restiff, like a horse, and so trample down the whole soul. But he attends to and cures it, and bridles it in the first instance by reason, that so, being under the guidance of the best of charioteers, it may not become exceedingly unmanageable, and in the second place, by the virtues of language, distinctness, and truth. For, if the angry passions were educated in such a way as to yield to reason and distinctness, and to cultivate the virtue of truthfulness, they would deliver themselves from great irritation and make the whole soul propitious.