Masks A mask is a covering worn on the face or something that disguises or conceals oneself. All the characters in Shakespeare's Hamlet hide behind masks to cover up who they really are, which contridictes a main idea, expressed by the fool, Old Polonius, "To thine ownself be true" (Polonius - 1.3.84). All the characters share strengths and triumphs, flaws and downfalls. Instead of revealing their vulnerabilities, each of them wears a mask that conceals who they are and there true convictions. The masks brought about feelings such as fear, hatred, insanity, indecisiveness, ambitiousness, and vengeance all of which contribute