THE SCENE: After his uncle killed his father and married his mother, the young Amleth (Hamlet) knew that the only way he could save his own life was through feigning madness.
THE TEXT: Amleth beheld all this, but feared lest too shrewd a behaviour might make his uncle suspect him. So he chose to feign dulness, and pretend an utter lack of wits. This cunning course not only concealed his intelligence but ensured his safety. Every day he remained in his mother’s house utterly listless and unclean, flinging himself on the ground and bespattering his person with foul and filthy dirt. His discoloured face and visage smutched with slime denoted foolish and grotesque madness. All he said was of a piece with these follies; all he did savoured of utter lethargy. In a word, you would not have thought him a man at all, but some absurd abortion due to a mad fit of destiny. He used at times to sit over the fire, and, raking up the embers with his hands, to fashion wooden crooks, and harden them in the fire, shaping at their lips certain barbs, to make them hold more tightly to their fastenings. When asked what he was about, he said that he was preparing sharp javelins to avenge his father. This answer was not a little scoffed at, all men deriding his idle and ridiculous pursuit; but the thing helped his purpose afterwards.
– Gesta Danorum, Saxo Grammaticus
[Image Credit: Amleth Haerder Traekroge by Louis Moe]