What is the relationship between the ideas of the Enlightenment and the culture and ideology of the French Revolution? This book takes up that classic question by concentrating on changing conceptions of language and, especially, signs during the second half of the eighteenth century. The author traces, first, the emergence of a new interest in the possibility of gestural communication within the philosophy, theater, and pedagogy of the last decades of the Old Regime. She then explores the varied uses and significance of a variety of semiotic experiments, including the development of a sign language for the deaf, within the language politics of the Revolution. A Revolution in Language shows not only that many key revolutionary thinkers were unusually preoccupied by questions of language, but also that prevailing assumptions about words and other signs profoundly shaped revolutionaries' efforts to imagine and to institute an ideal polity between 1789 and the start of the new century. This book reveals the links between Enlightenment epistemology and the development of modern French political culture.

"Fake news," wild conspiracy theories, misleading claims, doctored photos, lies peddled as facts, facts dismissed as lies—citizens of democracies increasingly inhabit a public sphere teeming with competing claims and counterclaims, with no institution or person possessing the authority to settle basic disputes in a definitive way. The problem may be novel in some of its details—including the role of today's political leaders, along with broadcast and digital media, in intensifying the epistemic anarchy—but the challenge of determining truth in a democratic world has a backstory. In this lively and illuminating book, historian Sophia Rosenfeld explores a longstanding and largely unspoken tension at the heart of democracy between the supposed wisdom of the crowd and the need for information to be vetted and evaluated by a learned elite made up of trusted experts. What we are witnessing now is the unraveling of the détente between these competing aspects of democratic culture. In four bracing chapters, Rosenfeld substantiates her claim by tracing the history of the vexed relationship between democracy and truth. She begins with an examination of the period prior to the eighteenth-century Age of Revolutions, where she uncovers the political and epistemological foundations of our democratic world. Subsequent chapters move from the Enlightenment to the rise of both populist and technocratic notions of democracy between the nineteenth and twentieth centuries to the troubling trends—including the collapse of social trust—that have led to the rise of our "post-truth" public life. Rosenfeld concludes by offering suggestions for how to defend the idea of truth against the forces that would undermine it.

Common sense has always been a cornerstone of American politics. In 1776, Tom Paine's vital pamphlet with that title sparked the American Revolution. And today, common sense-the wisdom of ordinary people, knowledge so self-evident that it is beyond debate-remains a powerful political ideal, utilized alike by George W. Bush's aw-shucks articulations and Barack Obama's down-to-earth reasonableness. But far from self-evident is where our faith in common sense comes from and how its populist logic has shaped modern democracy. Common Sense: A Political History is the first book to explore this essential political phenomenon. The story begins in the aftermath of England's Glorious Revolution, when common sense first became a political ideal worth struggling over. Sophia Rosenfeld's accessible and insightful account then wends its way across two continents and multiple centuries, revealing the remarkable individuals who appropriated the old, seemingly universal idea of common sense and the new strategic uses they made of it. Paine may have boasted that common sense is always on the side of the people and opposed to the rule of kings, but Rosenfeld demonstrates that common sense has been used to foster demagoguery and exclusivity as well as popular sovereignty. She provides a new account of the transatlantic Enlightenment and the Age of Revolutions, and offers a fresh reading on what the eighteenth century bequeathed to the political ferment of our own time. Far from commonsensical, the history of common sense turns out to be rife with paradox and surprise.