νᾶφε καὶ μέμνασο ἀπιστεῖν → keep a clear head and remember not to believe a thing (Epicharmus fr. 250)
obfirmate, retentus, edure, tenacitas, capito, pertinaciter, cervicatus, insisto, rigidus, obstino, obstinatus, obfirmo, pugno, contumax, pertinax, tenax
