You would have made out a far more plausible case by pretending that I made use of such things instead of fish, if only you had possessed the slightest erudition. For the belief in the use of these things is so widespread that you might have been believed. But of what use are fish save to be cooked and eaten at meals? In magic they seem to me to be absolutely useless. I will tell you why I think so.
Many hold Pythagoras to have been a pupil of Zoroaster, and, like him, to have been skilled in magic. And yet it is recorded that once near Metapontum, on the shores of Italy, his home, which his influence had converted into a second Greece, he noticed certain fishermen draw up their net. He offered to buy whatever it might contain, and after depositing the price ordered all the fish caught in meshes of the net to be relea~ed and thrown back into the sea. He would assuredly never have allowed them to slip from his possession had he known them to possess any valuable magical properties. For being a man of abnormal learning, and a great admirer of the men of old, he remembered that Homer, a poet of manifold or, rather I should say, absolute knowledge of all that may be known, spoke of the power of all the drugs that earth produces, but made no mention of the sea, when speasing of a certain witch, he wrote the line:
All drugs, that wide earth nourishes, she knew.
Similarly in another passage he says:
Earth the grain-giver
yields up to her its store of drugs, whereo
many be healing, mingled in the cup,
and many baneful.
But never in the works of Homer did Proteus anoint his face nor Ulysses his magic trench, nor Aeolus his windbags, nor Helen her mixing bowl, nor Circe her cup, nor Venus her girdle, with any charm drawn from the sea or its inhabitants. You alone within the memory of man have been found to sweep as it were by some convulsion of nature all the powers of herbs and roots and young shoots and small pebbles from their hilltops into the sea, and there confine them in the entrails of fish. And so whereas sorcerers at their rites used to call on Mercury the giver of oracles, Venus that lures the soul, the moon that knows the mystery of the night, and Trivia the mistress of the shades, you will transfer Neptune, with Salacia and Portumnus and all the company of Nereids from the cold tides of the sea to the burning tides of love.