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the earth. Many other arts, however, as for instance, the medical[1] and gymnastic, use this power, which has dominion over visible generation, and the qualities of the effluxions sent from the heavens employ it, and likewise all such arts as in their operations communicate with nature. And moreover, the image-making art attracts a certain very obscure genesiurgic portion from the celestial effluxions.
Such, therefore, as the truth is, such also it is requisite to unfold it to others. It must be said, then, that the maker of images neither uses the celestial circulations, nor the powers which are inherent in them, nor those powers
- ↑ Hippocrates was of opinion that physicians ought to be skilled in astronomy. And Galen derides those physicians who deny that astronomy is necessary to their art. See his treatise entitled Si quis sit Medicus eundem esse philosophum. And in lib. viii. cap. 20, of his treatise De Ingenio Sanitatis, he calls physicians that are ignorant of astronomy homicides. But by astronomy here, both Hippocrates and Galen intended to signify what is now called astrology. Roger Bacon also, in his Epistle to Pope Clement, says, "Opera quæ fiunt hic inferius, variantur secundum diversitatem cœlestium constellationum, ut opera medicinæ et alkimiæ." i. e. "The works which are performed in these inferior realms are varied according to the diversity of the celestial constellations, as, for instance, the works of medicine and alchemy." If, however, as Galen says, and doubtless with great truth, physicians that are ignorant of this are homicides, how numerous must the medical homicides be of the present age!
