Aristotle, Constitution of the Athenians
“Because [Solon] noticed that his city was often breaking out into civil strife and that some of the citizens welcomed the results because of ambivalence, he made a law particularly aimed at these people: whoever did not pick up arms for one side or the other during a time of civil conflict was to be disenfranchised and have no part of the state.”
ὁρῶν δὲ τὴν μὲν πόλιν πολλάκις στασιάζουσαν, τῶν δὲ πολιτῶν ἐνίους διὰ τὴν ῥᾳθυμίαν [ἀγα]πῶντας τὸ αὐτόματον, νόμον ἔθηκεν πρὸς αὐτοὺς ἴδιον, ὃς ἂν στασιαζούσης τῆς πόλεως μ[ὴ] θῆται τὰ ὅπλα μηδὲ μεθ’ ἑτέρων, ἄτιμον εἶναι καὶ τῆς πόλεως μὴ μετέχειν.
Cicero, Letters to Atticus 10.1.2
“In all honesty, I shall ignore that law of Solon—your countryman and, I suppose, mine too—which mandated death for anyone who was a part of neither side in a time of civil strife [or sedition]: unless you advise otherwise, I will abstain from that side and this one. But the other side is more certain to me—nevertheless, I won’t race ahead of myself on this.”
ego vero Solonis, popularis tui et ut puto etiam mei, legem neglegam, qui capite sanxit si qui in seditione non alterius utrius partis fuisset, et, nisi si tu aliter censes, et hinc abero et illim. sed alterum mihi est certius, nec praeripiam tamen.