Plato, Epinomis 986a

ἐνιαυτῶν ὥρας διανέμειν, ἆρʼ οὐκ ἂν κακὸς ἑαυτῷ τε καὶ ἄλλῳ τῷ γιγνώσκοντι λεγόμενος ἐν δίκῃ συνεδόκει λέγεσθαί ποτʼ ἄν; πῶς γὰρ οὔκ, ὦ ξένε; κάκιστος μὲν οὖν. τοῦτο τοίνυν, ὦ Κλεινία φίλε, περὶ ἐμὲ νῦν γιγνόμενον ἴσθι φανερῶς. πῶς λέγεις; ἴστε ὀκτὼ δυνάμεις τῶν περὶ ὅλον οὐρανὸν γεγονυίας ἀδελφὰς ἀλλήλων, ὧν καθεώρακα ἐγώ—καὶ οὐδὲν μέγα διαπέπραγμαι·

would it not be agreed both by himself and by another who observed it that he would justly be described as an evil man? To be sure he would, my good sir; nay, most evil. Well then, this, my dear Cleinias, is what, you may take it, has evidently happened to me now. How do you mean? You know that there are eight powers of those contained in the whole heaven which are cognate to each other: these I have observed, and it is no great achievement; for it is easy enough