Δεῖ τοὺς φιλοῦντας πίστιν, οὐ λόγους ἔχειν → Non bene stat intra verba amicorum fides → Vertrauen müssen Freunde sich, viel reden nicht
P. and V. βεβαίως, ἀσφαλῶς, P. ἀκινήτως, V. ἐμπέδως, ἀραρότως (also Plato but rare P.).
stubbornly: Ar. and P. αὐθάδως.