I teach history at Princeton, and write about the social, cultural, and intellectual history of the English-speaking world, from the middle ages to the present.

My main current interests are in the history of language and communication. My next book will be a global history of free speech, published by Harvard University Press in the U.S., and Penguin Random House in the rest of the world. Future projects include a a global history of English, a brief history of the signature, and the biography of a 17th-century scrivener and spy.

My book The Origins of Sex: A History of the First Sexual Revolution, is published by Penguin and Oxford University Press in English, Yilin Press in Chinese, Klett-Cotta Verlag in GermanEditora Globo in Portuguese, and is forthcoming from Fandango Libri in Italian.