Philo: On the Birth of Abel

XVI. (61) For the stream of the intemperate soul, flowing outwards through the mouth and tongue, is pumped up and poured into all ears. Some of which having wide channels, keeps that which is poured into them with all cheerfulness; but others, through the narrowness of the passages, are unable to be bedewed by it. But that which overflows being poured forth in an unrestrained manner, is scattered in every direction: so that what has been concealed escapes and floats on the top of it, and, like a random torrent of mud, bears along with it in its flood, things worthy of being tended with all care. (62) In reference to which, those persons appear to me to have come to a right decision who have been initiated in the lesser mysteries before learning anything of these greater ones. "For they baked their flour which they brought out of Egypt, baking secret cakes of unleavened Bread."

That is to say, they dealt with the untameable and savage passions, softening them with reason as they would knead bread; fore they did not divulge the manner of their kneading and improving it, as it was derived from some divine system of preparation; but they treasured it up in their secret stores, not being elated at the knowledge of the mystery, but yielding and being lowly as to their boasting.