ἄλογον δὴ τὸ μήτε μάχης ἄρξασθαι μήτε τοὺς φίλους φυλάξαι, ἐὰν ὑπό γε τῶν βαρβάρων ἀδικῆσθε → It is irrational neither to begin battle nor to guard the friends, if you are ever wronged by the foreigners
they sailed away to their several cities: P. ἀπέπλευσαν… ὡς ἕκαστοι κατὰ πόλεις (Thuc. 1, 89).