"Come, let me clutch thee. / I have thee not, and yet I see thee still"
Straight iambic pentameter from 'I have thee not'. The stresses highlight the key words in the parallelism (have, not, yet, see, still). Macbeth now has to make sense of this paradox; he plainly sees the dagger, it's right there in front of him, and yet he cannot lay hands upon it. The starkness of the line helps to punctuate the subtle change in Macbeth's tone as he tries to puzzle through this vision in the next few lines. At this point, he sees a dagger and nothing more.
Straight iambic pentameter from 'I have thee not'. The stresses highlight the key words in the parallelism (have, not, yet, see, still). Macbeth now has to make sense of this paradox; he plainly sees the dagger, it's right there in front of him, and yet he cannot lay hands upon it. The starkness of the line helps to punctuate the subtle change in Macbeth's tone as he tries to puzzle through this vision in the next few lines. At this point, he sees a dagger and nothing more.