Philo Judaeus De Congressu Eruditionis Gratia 61

[61] But as the head is the chief of all the aforementioned parts of an animal, so is Esau the chief of this race, whose name is at one time interpreted "an oak," and at another, "a thing made." It is interpreted an oak, in reference to his being unbending, and implacable, and obstinate, and stiff-necked by nature, and having folly for his chief fellow counsellor, and being as such of a truly oaken character. And it is interpreted "a thing made," inasmuch as a life according to folly is an invention and a fable, full of tragic pomp and vain boasting; and, on the other hand, of mockery and comic ridicule, having in it nothing ¹ sound, being full of falsehood, having utterly cast off truth, and disregarding as a thing of no value, that nature which is void of distinctive qualities, or of particular species, but plain and sincere, which the practiser of virtue loves.