§9.13.1ὃ μὲν δὴ εἴπας ταῦτα ἀπαλλάσσετο ὀπίσω, Μαρδόνιος δὲ οὐδαμῶς ἔτι πρόθυμος ἦν μένειν ἐν τῇ Ἀττικῇ, ὡς ἤκουσε ταῦτα.
Having said these things, he departed back again. As for Mardonius, when he heard this, he was no longer at all eager to remain in Attica.
πρὶν μέν νυν ἢ πυθέσθαι ἀνεκώχευε, θέλων εἰδέναι τὸ παρʼ Ἀθηναίων, ὁκοῖόν τι ποιήσουσι, καὶ οὔτε ἐπήμαινε οὔτε ἐσίνετο γῆν τὴν Ἀττικήν, ἐλπίζων διὰ παντὸς τοῦ χρόνου ὁμολογήσειν σφέας· §9.13.2ἐπεὶ δὲ οὐκ ἔπειθε, πυθόμενος πάντα λόγον, πρὶν ἢ τοὺς μετὰ Παυσανίεω ἐς τὸν Ἰσθμὸν ἐσβαλεῖν, ὑπεξεχώρεε ἐμπρήσας τε τὰς Ἀθήνας, καὶ εἴ κού τι ὀρθὸν ἦν τῶν τειχέων ἢ τῶν οἰκημάτων ἢ τῶν ἱρῶν, πάντα καταβαλὼν καὶ συγχώσας. §9.13.3ἐξήλαυνε δὲ τῶνδε εἵνεκεν, ὅτι οὔτε ἱππασίμη ἡ χώρη ἦν ἡ Ἀττική, εἴ τε νικῷτο συμβαλών, ἀπάλλαξις οὐκ ἦν ὅτι μὴ κατὰ στεινόν, ὥστε ὀλίγους σφέας ἀνθρώπους ἴσχειν.
Before he learned this, indeed, he had held back, wishing to know what the Athenians would do, and he neither harmed nor ravaged the land of Attica, hoping that they would come to terms through all this time. But since he could not persuade them, having learned the whole story, before those with Pausanias entered the Isthmus, he withdrew, having set fire to Athens, and if any part of the walls or houses or temples was standing upright, having thrown down and demolished everything. He marched out for these reasons: because the land of Attica was not fit for cavalry, and if he should be defeated in battle, there was no retreat except through a narrow pass, so that a few men could hold them back.
ἐβουλεύετο ὦν ἐπαναχωρήσας ἐς τὰς Θήβας συμβαλεῖν πρὸς πόλι τε φιλίῃ καὶ χώρῃ ἱππασίμῳ.
Therefore, he resolved to retreat to Thebes and fight near a friendly city and in a country suitable for cavalry.