Plato, Euthyphro, Apology, Crito, Phaedo, Εὐθύφρων 59:

καὶ τούτων μὲν ἅδην· ἐπειδὴ δέ μοι δοκεῖσ σὺ τρυφᾶν, αὐτόσ σοι συμπροθυμήσομαι δεῖξαι ὅπωσ ἄν με διδάξῃσ περὶ τοῦ ὁσίου. καὶ μὴ προαποκάμῃσ· ἰδὲ γὰρ εἰ οὐκ ἀναγκαῖόν σοι δοκεῖ δίκαιον εἶναι πᾶν τὸ ὅσιον. ἔμοιγε. ἆρ’ οὖν καὶ πᾶν τὸ δίκαιον ὅσιον; ἢ τὸ μὲν ὅσιον πᾶν δίκαιον, τὸ δὲ δίκαιον οὐ πᾶν ὅσιον, ἀλλὰ τὸ μὲν αὐτοῦ ὅσιον, τὸ δέ τι καὶ ἄλλο;