μέσσατος
From LSJ
ὅπλον μέγιστόν ἐστιν ἡ ἀρετή βροτοῖς → man's greatest weapon is virtue, virtue is the greatest weapon for mortals
English (LSJ)
η, ον, irreg. Sup. of μέσσος,
A midmost, ἐν μεσσάτῳ for ἐν μέσῳ, Il.8.223; Att. μέσατος, υἱός Ar.V.1502, cf. Men.267, Theoc. 21.19, IG14.2012A33 (Sulp. Max.), Opp.C.1.112, D.P.204:—in later Ep. μεσσάτιος, Call.Dian.78, D.P.296, Opp.C.4.442. (For the form, cf. νέατος, τρίτος τρίτατος.)