κρείσσων γὰρ ἦσθα μηκέτ' ὢν ἢ ζῶν τυφλός → thou wert better not alive, than living blind | you were better not alive, than living blind
Use adj. P. and V. εἰδώς.
do a thing wittingly: P. and V. εἰδώς τι πράσσειν; see intentionally.