Corpus Hermeticum, Pimander

Mercury, therefore, intends to instruct Aesculapius and Tatius in divine things. He who has not learned cannot teach divine things. But with human ingenuity, we cannot discover those things which are above human nature. Therefore, there is need of divine light, so that we may behold the sun itself with the light of the sun. Indeed, the light of the divine mind is never infused into the soul unless it, like the moon toward the sun, is turned entirely toward the mind of God. The soul is not turned toward the mind unless it also becomes a mind. Yet it does not become a mind until it has put aside the deceptions of the senses and the clouds of the imagination. For this reason, our Mercury puts off the darkness of the senses and the imagination and recalls himself to the sanctuary of the mind. Soon Pymander, that is, the divine mind, flows into him. Whence he contemplates the order of all things, both those existing in God and those flowing from God. Finally, what has been revealed to him by the divine spirit, he explains to other men.