Plato, Epinomis 979a

γέγονε, τὸ καθʼ ἓν αὐτὸ σκοποῦν· τὸ δὲ πρὸς ἄλληλα πάντα ἀριθμὸν ἀεὶ λογίζεσθαι, δοκῶ μὲν μείζονος ἕνεκα, καὶ τούτου δὲ σελήνην, καθάπερ εἴπομεν, αὐξανομένην καὶ φθίνουσαν ἐμποιήσας, μῆνας πρὸς τὸν ἐνιαυτὸν συνεστήσατο, καὶ πάντα ἀριθμὸν πρὸς ἀριθμὸν ἤρξατο συνορᾶν εὐδαίμονι τύχῃ. διὰ δὲ ταῦθʼ ἡμῖν καρποί τε καὶ ἐγκύμων ἡ γῆ γέγονεν, ὥστʼ εἶναι τροφὴν πᾶσι τοῖς ζῴοις, ἀνέμων τε καὶ ὑετῶν γιγνομένων οὐκ ἐξαισίων οὐδὲ ἀμέτρων· ἀλλʼ εἴ τι

when it considers any unit in itself. But as to reckoning number generally in the relations of things to each other, I think that God, if not for a greater reason, to this end interposed, as we mentioned, the waxing and waning of the moon, and arranged the months to make up the year, and all things began to comprehend number in relation to number by a happy fortune. Hence it is that we have fruits and the teeming of the earth, so that there may be food for all creatures, with no inordinate or immoderate occurrences of winds and rains: