συγχωρῆσαι: sc. μέ from the preceding μοί.
τό: for the neut. art. with a clause, see G. 141, N. 7. —
εἰ βούλει: Socrates often rejects concessions made merely from courtesy, mere conditional assent, because he has to do with truth, with genuine persuasion, not with a momentary exhibition of his own skill and acuteness. He who will find the truth must take into the contest himself and his real belief; cf. 333 c.
τοῦτο κτἑ.: I use this expression ‘you and me.’ τοῦτο does not refer to what follows (by ‘you and me’ I mean this).
