rational
Γηράσκω δ᾽ αἰεὶ πολλὰ διδασκόμενος -> I grow old always learning many things
Solon the AthenianEnglish > Greek (Woodhouse)
adjective
endowed with reason: use P. and V. λόγον ἔχων.
sane: P. and V. ἔμφρων; see sane.
reasonable: P. and V. εὔλογος.