Plato, Laws 904d

μεταπεσόντα, εἰς βάθος τά τε κάτω λεγόμενα τῶν τόπων, ὅσα Ἅιδην τε καὶ τὰ τούτων ἐχόμενα τῶν ὀνομάτων ἐπονομάζοντες σφόδρα φοβοῦνται καὶ ὀνειροπολοῦσιν ζῶντες διαλυθέντες τε τῶν σωμάτων. μείζω δὲ δὴ ψυχὴ κακίας ἢ ἀρετῆς ὁπόταν μεταλάβῃ διὰ τὴν αὑτῆς βούλησίν τε καὶ ὁμιλίαν γενομένην ἰσχυράν, ὁπόταν μὲν ἀρετῇ θείᾳ προσμείξασα γίγνηται διαφερόντως τοιαύτη, διαφέροντα καὶ μετέβαλεν

then they move towards the deep and the so-called lower regions, regarding which—under the names of Hades and the like—men are haunted by most fearful imaginings, both when alive and when disparted from their bodies. And whenever the soul gets a specially large share of either virtue or vice, owing to the force of its own will and the influence of its intercourse growing strong, then, if it is in union with divine virtue, it becomes thereby eminently virtuous, and moves to an eminent region, being transported by a holy road to another and a better region;