οὐκ ἔστιν αἰσχρὸν ἀγνοοῦντα μανθάνειν → there is no shame in, not knowing, inquiring
ŏpīnĭōsus: a, um, adj. opinio,I fixed or set in opinion (rare): Antipater et Archidemus opiniosissimi homines, * Cic. Ac. 2, 47, 143 dub.; Tert. adv. Marc. 4, 35.