Philo Judaeus De Ebrietate 86

[86] for it is fitting that the wise man should be adorned both with the invisible excellences existing within in the soul, and also with those external ones which are outwardly visible, and with prudence which is more valuable than gold. And whenever it departs from human studies, worshipping ^{1 2 3} the living God alone, it puts on the simple unvaried robe of truth, which no mortal thing can ever touch, for it is made of linen material, a material not produced from any being whose nature it is to die. But whenever it passes over to mix in political affairs, then it lays aside the man’s robe and assumes the other embroidered one of a most admirable beauty to look at; for life being a thing of great variety and of great changes, requires the diversified wisdom of the pilot who is to hold the helm;