Diogenes Laertius, Lives of the Philosophers 7.7 180 Chrysippus
“He was so famous for his dialectic that the majority of people supposed that if the gods had dialectic if would be no different from Chrysippus’. While he had plenty of material, he was not much mistaken in his phrasing too.
He was the hardest working philosopher of them all, as is clear from the mere list of his publications: for their count is beyond 705. But he did advance their number by writing often on the same matter and writing down everything he thought of and correcting it often while also using and abundance of citations. This was so severe that in one of his publications he set out nearly every part of Euripides’ Medea. When someone picked up the book and asked him what he was reading, he said “Chrysippus’ Medea.”
Οὕτω δ᾿ ἐπίδοξος ἐν τοῖς διαλεκτικοῖς ἐγένετο, ὥστε δοκεῖν τοὺς πλείους ὅτι εἰ παρὰ θεοῖς ἦν [ἡ] διαλεκτική, οὐκ ἂν ἄλλη ἦν ἢ ἡ Χρυσίππειος. πλεονάσας δὲ τοῖς πράγμασι τὴν λέξιν οὐ κατώρθωσε. πονικώτατός τε παρ᾿ ὁντινοῦν γέγονεν, ὡς δῆλον ἐκ τῶν συγγραμμάτων αὐτοῦ· τὸν ἀριθμὸν γὰρ ὑπὲρ πέντε καὶ ἑπτακόσιά ἐστιν. ἐπλήθυνε δ᾿ αὐτὰ πολλάκις ὑπὲρ τοῦ αὐτοῦ δόγματος ἐπιχειρῶν καὶ πᾶν τὸ ὑποπεσὸν γράφων καὶ διορθούμενος πλεονάκις πλείστῃ τε τῶν μαρτυριῶν παραθέσει χρώμενος· ὥστε καὶ ἐπειδή ποτ᾿ ἔν τινι τῶν συγγραμμάτων παρ᾿ ὀλίγον τὴν Εὐριπίδου Μήδειαν ὅλην παρετίθετο καί τις μετὰ χεῖρας εἶχε τὸ βιβλίον, πρὸς τὸν πυθόμενον τί ἄρα ἔχοι, ἔφη, “Χρυσίππου Μήδειαν.”