Plutarch, Moralia 635—Table-Talk, Book 2 Problem 2: Why People are Hungrier in The Fall (Partial text available on LacusCurtius)
“After the Mysteries in Eleusis when the entire festival was at its peak, we were having a feast at the house of Glaukias the rhetorician. When the rest had finished their dinner, Xenokles the Delphian began to mock my brother, as he usually does, about his “Boiotian gluttony”.
As I was defending him I used the words of Epicurus against Xenokles, and said “All men don’t make the avoidance of what hurts the boundary and the limit of pleasure. Lamprias honors the Peripatos and the Lukeion before the garden and therefore attests to Aristotle. For this man says that everyone is hungriest in the autumn. He also provided an explanation, which I do not recall.”
“This is better”, Glaukias added, “for we ourselves will try to find one when we have stopped dining, Once the meals were taken away, both Glaukias and Xenokles were claiming that it was autumn’s fruit which was to blame, but for different reason.
The first claimed that it cleansed the bowels and by emptying the body was preparing the appetites anew. The other said that the pleasant and delicate nature of the fruit incited the stomach to food much more than any relish or source. Indeed, the offering of some fruit to people who have been sick and have fasted incites the appetite.”
Διὰ τί βρωτικώτεροι γίγνονται περὶ τὸ μετόπωρον
Ἐν Ἐλευσῖνι μετὰ τὰ μυστήρια τῆς πανηγύρεως ἀκμαζούσης εἱστιώμεθα παρὰ Γλαυκίᾳ τῷ ῥήτορι. πεπαυμένων δὲ δειπνεῖν τῶν ἄλλων, Ξενοκλῆς ὁ Δελφὸς ὥσπερ εἰώθει τὸν ἀδελφὸν ἡμῶν Λαμπρίαν εἰς ἀδηφαγίαν Βοιώτιον ἐπέσκωπτεν. ἐγὼ δ᾿ ἀμυνόμενος ὑπὲρ αὐτοῦ τὸν Ξενοκλέα τοῖς Ἐπικούρου λόγοις χρώμενον, “οὐ γὰρ ἅπαντες,” εἶπον, “ὦ βέλτιστε, ποιοῦνται τὴν τοῦ ἀλγοῦντος ὑπεξαίρεσιν ὅρον ἡδονῆς καὶ πέρας· Λαμπρίᾳ δὲ καὶ ἀνάγκη, πρὸ τοῦ κήπου κυδαίνοντι τὸν περίπατον καὶ τὸ Λύκειον, ἔργῳ μαρτυρεῖν Ἀριστοτέλει· φησὶ γὰρ ὁ ἀνὴρ βρωτικώτατον ἕκαστον αὐτὸν αὑτοῦ περὶ τὸ φθινόπωρον εἶναι, καὶ τὴν αἰτίαν ἐπείρηκεν· ἐγὼ δ᾿ οὐ μνημονεύω.”
“Βέλτιον,” εἶπεν ὁ Γλαυκίας· “αὐτοὶ γὰρ ἐπιχειρήσομεν ζητεῖν, ὅταν παυσώμεθα δειπνοῦντες.” Ὡς οὖν ἀφῃρέθησαν αἱ τράπεζαι, Γλαυκίας μὲν καὶ Ξενοκλῆς ᾐτιάσαντο τὴν ὀπώραν διαφόρως, ὁ μὲν ὡς3 τὴν κοιλίαν ὑπεξάγουσαν καὶ τῷ κενοῦσθαι τὸ σῶμα νεαρὰς ὀρέξεις ἀεὶ παρασκευάζουσαν· ὁ δὲ Ξενοκλῆς ἔλεγεν εὔστομόν τι καὶ δηκτικὸν ἔχοντα τῶν ὡραίων τὰ πλεῖστα τὸν στόμαχον ἐπὶ τὴν βρῶσιν ἐκκαλεῖσθαι παντὸς μᾶλλον ὄψου καὶ ἡδύσματος· καὶ γὰρ τοῖς ἀποσίτοις τῶν ἀρρώστων ὀπώρας τι προσενεχθὲν ἀναλαμβάνει τὴν ὄρεξιν.