Plato, Laws 791a

ἔξωθέν τις προσφέρῃ τοῖς τοιούτοις πάθεσι σεισμόν, ἡ τῶν ἔξωθεν κρατεῖ κίνησις προσφερομένη τὴν ἐντὸς φοβερὰν οὖσαν καὶ μανικὴν κίνησιν, κρατήσασα δέ, γαλήνην ἡσυχίαν τε ἐν τῇ ψυχῇ φαίνεσθαι ἀπεργασαμένη τῆς περὶ τὰ τῆς καρδίας χαλεπῆς γενομένης ἑκάστων πηδήσεως, παντάπασιν ἀγαπητόν τι, τοὺς μὲν ὕπνου λαγχάνειν ποιεῖ, τοὺς δʼ ἐγρηγορότας ὀρχουμένους τε καὶ αὐλουμένους μετὰ θεῶν, οἷς ἂν καλλιεροῦντες ἕκαστοι θύωσι, κατηργάσατο ἀντὶ μανικῶν

to affections of this kind, the external motion thus applied overpowers the internal motion of fear and frenzy, and by thus overpowering it, it brings about a manifest calm in the soul and a cessation of the grievous palpitation of the heart which had existed in each case. Thus it produces very satisfactory results. The children it puts to sleep; the Bacchants, who are awake, it brings into a sound state of mind instead of a frenzied condition, by means of dancing and playing, with the help of whatsoever gods