The Shakespeare Code apparent ontological paradox by inspiring Shakespeare to borrow phrases that the Doctor quotes from his plays. Examples of this include the Doctor telling Shakespeare that "all the world's a stage" (from "As You Like It") and "the play's the thing" (from "Hamlet"), as well as the name Sycorax from "The Tempest". However, when Shakespeare himself coins the phrase "To be, or not to be", the Doctor suggests he write it down, but Shakespeare considers it "too pretentious". In a different version of the joke, the Doctor exclaims "Once more unto the breach", and Shakespeare initially likes the phrase, before realising
Lance Sweets the show. Besides his academic intellect and skill as a profiler, Sweets has various interests outside of psychology. A skilled chess player, he was also one of the youngest chessmasters in the federation which he was a member of during his college days. He is musically-inclined and plays the piano (as does actor John Francis Daley); in during the time frame between Seasons 5 and 6 he takes a sabbatical when Booth, Brennan, Angela, Hodgins and Daisy leave Washington DC for a year and becomes a freelance pianist. He is also well-read and familiar with William Shakespeare. In the season