Ἒστιν ὃ μὲν χείρων, ὃ δ' ἀμείνων ἔργον ἕκαστον· οὐδεὶς δ' ἀνθρώπων αὐτὸς ἅπαντα σοφός. (Theognis 901f.) → One is worse, the other better at each deed, but no man is wise in all things.
simply: P. and V. ἁπλῶς.
guilelessly: P. ἀδόλως.
genuinely: P. ἀληθινῶς, ἀκιβδήλως; see really.