αὐτὸν κέκρουκας τὸν βατῆρα τοῦ λόγου → you have struck the very threshold of the argument, you have struck the most important and chiefmost point
archĭtectŏnĭcē: ēs, f., = ἀρχιτεκτονική (sc. τέχνη>),
I the art of building, architecture, Quint. 2, 21, 8.
