εὖ νῦν. Though in O. T. 658 and El. 616 we have “εὖ νυν ἐπίστω”, the temporal “νῦν” seems fitter in this curt response. ἀκηκοὼς is much better here than ἀκήκοας. In Ai. 480“πάντ᾽ ἀκήκοας λόγον” is fitting at the end of a speech: cp. above 241 n. But in a brief statement of resolve, such as this, the compact unity given by the participial construction suits the placid firmness of the speaker's tone. Cp. 253, 567.