LADY MACBETH
Alack, I am afraid they have awaked,
And 'tis not done. The attempt and not the deed
Confounds us. Hark! I laid their daggers ready;
He could not miss 'em. Had he not resembled
My father as he slept, I had done't.
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"Her will, it is clear, was exerted to overpower not only her husband's resistance but some resistance in herself."
Bradley, A. C. Shakespearean Tragedy: Lectures on Hamlet, Othello, King Lear, Macbeth.
2nd ed. London: Macmillan, 1905.