This dissertation traces an alternative history of an understudied and often-maligned eighteenth-century genre: speech. Conventional narratives of the eighteenth century have tended to emphasize the increasing dominance of print, but my project recovers an active interest and confidence in spoken language.

Despite a perception in the period that speech was transient, mutable, and vulnerable to corruption, I show that, paradoxically, eighteenth-century authors consistently turn to speech—both as a formal device and a conceptual trope—in order to legitimize their writing. Biographer and compulsive journal-writer James Boswell pursues self-knowledge through transcribed conversation; letter-writing lovers (Swift and Stella, Sterne and Eliza, Thrale Piozzi and Conway) establish intimacy through the trope of the “talking” letter; and female grammarians and lexicographers assert linguistic authority through their mastery of spoken language. These examples demonstrate that questions about the value of speech were at the crux of many pivotal eighteenth-century debates, including where to locate the authentic self, how best to standardize the English language, and what kinds of knowledge should matter or “count.” Moreover, these examples point to the role of speech in shaping four quintessential genres of the Enlightenment: the journal, the biography, the letter, and the dictionary or grammar. In looking at how spoken language influences writing, my work makes clear that the eighteenth-century debate about speech sets up a false dichotomy between these two categories; in fact, speech and writing are far more intimately connected than modern critics have allowed.