Julius Caesar was a play written by William Shakespeare, generally considered a classic of Human literature, based on the life of Gaius Julius Caesar, a military and political leader of the Roman Republic of ancient Earth. In 2293, General Chang quoted lines from the play including "If you have tears, prepare to shed them now."; "Cry 'havoc!' and let slip the dogs of war!"; and "I am as constant as the northern star" while his Bird-of-Prey attacked the USS Enterprise-A over Khitomer. (Star Trek VI: The Undiscovered Country) The title of "The Dogs of War" comes from a quote from Julius Caesar.