The union of England’s and Scotland’s parliaments was not just a political and economic project but also a narrative and rhetorical one. As a dissenter, tradesman, and newspaper proprietor, Defoe was uniquely positioned to write Great Britain into existence. This chapter reveals that whether he was addressing Scottish or English readers, and whether he was writing pamphlets, poetry, or articles for his Review, Defoe’s message regarding the Act of Union was remarkably consistent. Employing a rhetoric of common sense, he repeatedly argued that it was illogical to pit Scottish against English interests in the negotiation of a treaty that would transform both into Britons and render their interests identical. This argument boldly asked readers to imagine that they were already British, or to proleptically inhabit an as yet unrealized identity.