Hamlet: […] There is a play to-night before the king;One scene of it comes near the circumstanceWhich I have told thee of my father's death:I prithee, when thou seest that act afoot,Even with the very comment of thy soulObserve mine uncle: if his occulted guiltDo not itself unkennel in one speech,It is a damned ghost that we have seen,And my imaginations are as foulAs Vulcan's stithy. Give him heedful note;For I mine eyes will rivet to his face,And after we will both our judgments joinIn censure of his seeming.
c. 1599–1602 (date written), William Shakespeare, “The Tragedie of Hamlet, Prince of Denmarke”, in Mr. William Shakespeares Comedies, Histories, & Tragedies […] (First Folio), London: […] Isaac Iaggard, and Ed[ward] Blount, published 1623, [Act III, scene ii]