§6.45.1Ὅσα ἑκάστῳ συμβαίνει, ταῦτα τῷ ὅλῳ συμφέρει· ἤρκει τοῦτο.
Whatever happens to each individual is useful to the whole; this might have been enough.
ἀλλ’ ἔτι ἐκεῖνο ὡς ἐπίπαν ὄψει παραφυλάξας, ὅσα ἀνθρώπῳ, καὶ ἑτέροις ἀνθρώποις.
But if you observe closely, you will further see this as a general rule: that whatever is useful to one man is also useful to other men.
κοινότερον δὲ νῦν τὸ συμφέρον ἐπὶ τῶν μέσων λαμβανέσθω.
But now, let "what is useful" be understood in a more common sense, as applied to indifferent things.