"I do not like the way people use the more and more magnificent fruits of technology to their filthy deeds."

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Macbeth's deed is done in horror, and without the faintest desire or sense of glory- done, one may almost say, as if it were an appalling duty; the instant it is finished, its futility is revealed to Macbeth as clearly as its vileness had been revealed beforehand

— A. C. Bradley