Passage 4.7.11
πρό τε δὴ τηλικούτων κακῶν κέρδος εἶναι καλῶς τινα ἀποθανεῖν, πολὺ δὲ εἶναι ῥᾷον ἀηττήτοις οὖσιν ἔτι καὶ τὰς τόλμας καθεστηκόσιν ἐξ ἴσου προθυμίᾳ τοὺς ἀντιτεταγμένους ὑπερβαλεῖν ἢ προαποβαλόντας τὸ φρόνημα ἐπανορθοῦσθαι τὰ ἐπταισμένα.
Indeed, it is advantageous, before falling into evils of such magnitude, that one should meet a noble death; and it is far easier, while still undefeated and maintaining a spirit of courage, to surpass one’s opponents through equal enthusiasm than, having already lost one's resolve, to restore failures.