From Aulus Gellius’ Attic Nights, book 4, chapter 11, we find this curious tale about Pythagoras, the philosopher well-known for his vegetarianism and opposition to eating beans. It is, perhaps, from an anti-Pythagoras source.
11. The nature of the information which Aristoxenus has handed down about Pythagoras on the ground that it was more authoritative; and also what Plutarch wrote in the same vein about that same Pythagoras.
An erroneous belief of long standing has established itself and become current, that the philosopher Pythagoras did not eat of animals: also that he abstained from the bean, which the Greeks call κύαμος. In accordance with that belief the poet Callimachus wrote:
I tell you too, as did Pythagoras,
Withhold your hands from beans, a hurtful food.
Also, as the result of the same belief, Marcus Cicero wrote these words in the first book of his work On Divination: “Plato therefore bids us go to our sleep in such bodily condition that there may be nothing to cause delusion and disturbance in our minds. It is thought to be for that reason too that the Pythagoreans were forbidden to eat beans, a food that produces great flatulency, which is disturbing to those who seek mental calm.”
So then Cicero. But Aristoxenus the musician, a man thoroughly versed in early literature, a pupil of the philosopher Aristotle, in the book On Pythagoras which he has left us, says that Pythagoras used no vegetable more often than beans, since that food gently loosened the bowels and relieved them. I add Aristoxenus’ own words: “Pythagoras among vegetables especially recommended the bean, saying that it was both digestible and loosening; and therefore he most frequently made use of it.”
Aristoxenus also relates that Pythagoras ate very young pigs and tender kids. This fact he seems to have learned from his intimate friend Xenophilus the Pythagorean and from some other older men, who lived not long after the time of Pythagoras. And the same information about animal food is given by the poet Alexis, in the comedy entitled “The Pythagorean Bluestocking.” Furthermore, the reason for the mistaken idea about abstaining from beans seems to be, that in a poem of Empedocles, who was a follower of Pythagoras, this line is found:
O wretches, utter wretches, from beans withhold your hands.
For most men thought that κυάμους meant the vegetable, according to the common use of the word. But those who have studied the poems of Empedocles with greater care and knowledge say that here κυάμους refers to the testicles, and that after the Pythagorean manner they were called in a covert and symbolic way κύαμοι, because they are the cause of pregnancy and furnish the power for human generation: and that therefore Empedocles in that verse desired to keep men, not from eating beans, but from excess in venery.
Plutarch too, a man of weight in scientific matters, in the first book of his work On Homer wrote that Aristotle gave the same account of the Pythagoreans: namely, that except for a few parts of the flesh they did not abstain from eating animals. Since the statement is contrary to the general belief, I have appended Plutarch’s own words: “Aristotle says that the Pythagoreans abstained from the matrix, the heart, the ἀκαλήφη and some other such things, but used all other animal food.” Now the ἀκαλήφη is a marine creature which is called the sea-nettle. But Plutarch in his Table Talk says that the Pythagoreans also abstained from mullets.
But as to Pythagoras himself, while it is well known that he declared that he had come into the world as Euphorbus, what Cleanthes and Dicaearchus have recorded is less familiar—that he was afterwards Pyrrhus Pyranthius, then Aethalides, and then a beautiful courtesan, whose name was Alco.