They assert, however, that Edem is the brain, as it were, bound and tightly fastened in encircling robes, as if (in) heaven. But they suppose that man, as far as the head only, is Paradise, therefore that “this river, which proceeds out of Edem,” that is, from the brain, “is divided into four heads, and that the name of the first river is called Phison; this is that which encompasseth all the land of Havilath: there is gold, and the gold of that land is excellent, and there is bdellium and the onyx stone.” This, he says, is the eye, which, by its honour (among the rest of the bodily organs), and its colours, furnishes testimony to what is spoken. “But the name of the second river is Gihon: this is that which compasseth the land of Ethiopia.” This, he says, is hearing, since Gihon is (a tortuous stream), resembling a sort of labyrinth. “And the name of the third is Tigris. This is that which floweth over against (the country of) the Assyrians.” This, he says, is smelling, employing the exceedingly rapid current of the stream (as an analogy of this sense). But it flows over against (the country of) the Assyrians, because in every act of respiration following upon expiration, the breath drawn in from the external atmosphere enters with swifter motion and greater force. For this, he says, is the nature of respiration. “But the fourth river is Euphrates.” This, they assert, is the mouth, through which are the passage outwards of prayer, and the passage inwards of nourishment. (The mouth) makes glad, and nurtures and fashions the Spiritual Perfect Man. This, he says, is “the water that is above the firmament,” concerning which, he says, the Saviour has declared, “If thou knewest who it is that asks, thou wouldst have asked from Him, and He would have given you to drink living, bubbling water.” Into this water, he says, every nature enters, choosing its own substances; and its peculiar quality comes to each nature from this water, he says, more than iron does to the magnet, and the gold to the backbone of the sea falcon, and the chaff to the amber.