More than any other part the framework of the head would have had them, if they could have co-existed, and the human race, having a strong and fleshy and sinewy head, would have had a life twice or many times as long as it now has, and also more healthy and free from pain. But our creators, considering whether they should make a longer-lived race which was worse, or a shorter-lived race which was better, came to the conclusion that every one ought to prefer a shorter span of life, which was better, to a longer one, which was worse; and therefore they covered the head with thin bone, but not with flesh and sinews, since it had no joints; and thus the head was added, having more wisdom and sensation than the rest of the body, but also being in every man far weaker. For these reasons and after this manner God placed the sinews at the extremity of the head, in a circle round the neck, and glued them together by the principle of likeness and fastened the extremities of the jawbones to them below the face, and the other sinews he dispersed throughout the body, fastening limb to limb. The framers of us framed the mouth, as now arranged, having teeth and tongue and lips, with a view to the necessary and the good, contriving the way in for necessary purposes, the way out for the best purposes; for that is necessary which enters in and gives food to the body; but the river of speech, which flows out of a man and ministers to the intelligence, is the fairest and noblest of all streams. Still the head could neither be left a bare frame of bones, on account of the extremes of heat and cold in the different seasons, nor yet be allowed to be wholly covered, and so become dull and senseless by reason of an overgrowth of flesh.

μάλιστα γὰρ ἂν αὐτὰ πάντων ἔσχεν ἡ περὶ τὴν κεφαλὴν σύστασις͵ εἴπερ ἅμα συμπίπτειν ἠθελησάτην͵ καὶ τὸ τῶν ἀνθρώπων γένος σαρκώδη ἔχον ἐφ΄ ἑαυτῷ καὶ νευρώδη κρατεράν τε κεφαλὴν βίον ἂν διπλοῦν καὶ πολλαπλοῦν καὶ ὑγιεινότερον καὶ ἀλυπότερον τοῦ νῦν κατεκτήσατο. νῦν δὲ τοῖς περὶ τὴν ἡμετέραν γένεσιν δημιουργοῖς͵ [75c] ἀναλογιζομένοις πότερον πολυχρονιώτερον χεῖρον ἢ βραχυχρονιώτερον βέλτιον ἀπεργάσαιντο γένος͵ συνέδοξεν τοῦ πλείονος βίου͵ φαυλοτέρου δέ͵ τὸν ἐλάττονα ἀμείνονα ὄντα παντὶ πάντως αἱρετέον· ὅθεν δὴ μανῷ μὲν ὀστῷ͵ σαρξὶν δὲ καὶ νεύροις κεφαλήν͵ ἅτε οὐδὲ καμπὰς ἔχουσαν͵ οὐ συνεστέγασαν. κατὰ πάντα οὖν ταῦτα εὐαισθητοτέρα μὲν καὶ φρονιμωτέρα͵ πολὺ δὲ ἀσθενεστέρα παντὸς ἀνδρὸς προσετέθη κεφαλὴ σώματι. [75d] τὰ δὲ νεῦρα διὰ ταῦτα καὶ οὕτως ὁ θεὸς ἐπ΄ ἐσχάτην τὴν κεφαλὴν περιστήσας κύκλῳ περὶ τὸν τράχηλον ἐκόλλησεν ὁμοιότητι͵ καὶ τὰς σιαγόνας ἄκρας αὐτοῖς συνέδησεν ὑπὸ τὴν φύσιν τοῦ προσώπου· τὰ δ΄ ἄλλα εἰς ἅπαντα τὰ μέλη διέσπειρε͵ συνάπτων ἄρθρον ἄρθρῳ. τὴν δὲ δὴ τοῦ στόματος ἡμῶν δύναμιν ὀδοῦσιν καὶ γλώττῃ καὶ χείλεσιν ἕνεκα τῶν ἀναγκαίων καὶ τῶν ἀρίστων διεκόσμησαν οἱ διακοσμοῦντες ᾗ νῦν διατέτακται͵ [75e] τὴν μὲν εἴσοδον τῶν ἀναγκαίων μηχανώμενοι χάριν͵ τὴν δ΄ ἔξοδον τῶν ἀρίστων· ἀναγκαῖον μὲν γὰρ πᾶν ὅσον εἰσέρχεται τροφὴν διδὸν τῷ σώματι͵ τὸ δὲ λόγων νᾶμα ἔξω ῥέον καὶ ὑπηρετοῦν φρονήσει κάλλιστον καὶ ἄριστον πάντων ναμάτων. τὴν δ΄ αὖ κεφαλὴν οὔτε μόνον ὀστεΐνην ψιλὴν δυνατὸν ἐᾶν ἦν διὰ τὴν ἐν ταῖς ὥραις ἐφ΄ ἑκάτερον ὑπερβολήν͵ οὔτ΄ αὖ συσκιασθεῖσαν κωφὴν καὶ ἀναίσθητον διὰ τὸν τῶν σαρκῶν ὄχλον περιιδεῖν γιγνομένην·