Critical Article on MacBeth William Empson disagreed with many of J. M. Robertson, Literary Detection (1931), about certain points surrounding MacBeth. "The eye wink at the hand, yet let that be which the eye fear, when tis done, to see." is a line from MacBeth which to Robertson "appeared particularly vulgar". William Empson discusses this point and says that "he throws out a number of them which seem to me to sum up the thought of the play.". I agree with Williams on this point because what Robertson passed off for being vulgar, I believe helped to sum up certain points which a scene is trying to make. For example, Robertson calls this line of MacBeth: