Plato, Meno 81c

ἐκ τᾶν βασιλῆες ἀγαυοὶ καὶ σθένει κραιπνοὶ σοφίᾳ τε μέγιστοι ἄνδρες αὔξοντʼ· ἐς δὲ τὸν λοιπὸν χρόνον ἥρωες ἁγνοὶ πρὸς ἀνθρώπων καλεῦνται. ἅτε οὖν ἡ ψυχὴ ἀθάνατός τε οὖσα καὶ πολλάκις γεγονυῖα, καὶ ἑωρακυῖα καὶ τὰ ἐνθάδε καὶ τὰ ἐν Ἅιδου καὶ πάντα χρήματα, οὐκ ἔστιν ὅτι οὐ μεμάθηκεν· ὥστε οὐδὲν θαυμαστὸν καὶ περὶ ἀρετῆς καὶ περὶ ἄλλων οἷόν τʼ εἶναι αὐτὴν ἀναμνησθῆναι, ἅ γε καὶ πρότερον ἠπίστατο. ἅτε γὰρ τῆς φύσεως

glorious kings and men of splendid might and surpassing wisdom, and for all remaining time are they called holy heroes amongst mankind.Seeing then that the soul is immortal and has been born many times, and has beheld all things both in this world and in the nether realms, she has acquired knowledge of all and everything; so that it is no wonder that she should be able to recollect all that she knew before about virtue and other things. For as