ἆρ᾽ οὖν μανθάνω κτἑ.: this question is put without any expecta tion of an answer. οἵαν is used, and not τίνα, because there is no inquiry after the name of the art (which for the moment is considered satisfactory), but after its nature or kind, which must now be more clearly defined. In the following methodical discussion Socrates makes clear what was present, but in a confused form, in Gorgias' mind. The question now is as to the means of the κύρωσις. The ground of distinction is formed by the contrast so familiar to the Greeks between λόγος and ἔργον (λέγειν and πράττειν). Cf. Apol. 32 a.
τῶν μέν: in part. apposition with πασῶν. See H. 624 d. The correlative is ἕτεραι δέ (12), while ἔνιαι δέ is to be connected with δέονται as one division of the τῶν μέν, and as correlative with the implied subject (αἱ μέν) of δέονται. Below we find ἢ . . . ἤ instead.
τὸ τῆς τεχνής: the business, function of the art. See H. 730 b.