For I mine eyes will rivet to his face,
And after we will both our judgments join
In censure of his seeming.

– William Shakespeare

Hamlet, Act 3, Scene 2. Hamlet speaking to Horatio, on the play The Murder of Gonzago. The drama is designed to deceive Claudius and Gertrude, as it portrays their lives. Hamlet is using it to determine whether Claudius is actually guilty of his father’s murder.