Diogenes Laertius, Crates 6.5.89
“Eratosthenes says that [Crates] had a son with Hipparkhia—about whom we will speak—and that his name was Pasikles. When he was an adolescent, Crates took him to a brothel and said that this was where his father was married.
Marriages of adulterers, he explained, were tragic plots and had exiles or murders as their consequences. Marriages with prostitutes, however, are for comic plots and they produce madness from excessive behavior and drunkenness.”
Ἐρατοσθένης δέ φησιν, ἐξ Ἱππαρχίας, περὶ ἧς λέξομεν, γενομένου παιδὸς αὐτῷ ὄνομα Πασικλέους, ὅτ᾿ ἐξ ἐφήβων ἐγένετο, ἀγαγεῖν αὐτὸν ἐπ᾿ οἴκημα παιδίσκης καὶ φάναι τοῦτον αὐτῷ πατρῷον εἶναι τὸν γάμον· τοὺς δὲ τῶν μοιχευόντων τραγικούς, φυγὰς <γὰρ> καὶ φόνους ἔχειν ἔπαθλον· τοὺς δὲ τῶν ἑταίραις προσιόντων κωμικούς· ἐξ ἀσωτίας γὰρ καὶ μέθης μανίαν ἀπεργάζεσθαι.