In Tom Stoppard's Travesties, Lenin and Tzara stand opposed, Lenin living at Number 14 Spiegelgasse, Tzara meeting his associates at the Meierei Bar, Number 1.1 The name of the street comments on the two historical figures' thematic and structural relationship in the play. They mirror one another as revolutionaries, but they differ in that one is transforming the world, the other art. This fundamental structure of sameness and difference is essential to the design of the play. It is an imaginative form, not simply conceptual or analytical. It functions as metaphor, and is a metaphorical principle underlying particular images.