The peasant of early modern France inhabited a world of step-mothers and orphans, of inexorable, unending toil, and of brutal emotions, both raw and repressed.The human condition has changed so much since then that we can hardly imagine the way it appeared to people whose lives really were nasty, brutish, and short. This is why we need to reread Mother Goose.

I worked for a brief spell as a journalist, but soon I discovered that I didn't want to be a journalist - I wanted to be a historian.

In 2002, Google began an ambitious project to digitize every book in the world. It was intended as a search project: type in a query, and Google would show you snippets. They asked university libraries for books, which they would scan for free. At Harvard we didn't permit them to take works under copyright, but other libraries gave them everything.

The notion of 'history from below' hit the history profession in England very hard around the time I came to Oxford in the early 1960s.

As president of the American Historical Association, I started a programme to make dissertations into e-books in 1999. Before I knew it, I was involved in other electronic projects. Harvard invited me to become director of the libraries in 2007.

As a graduate student at Oxford in 1963, I began writing about books in revolutionary France, helping to found the discipline of book history. I was in my academic corner writing about Enlightenment ideals when the Internet exploded the world of academic communication in the 1990s.

I would not minimize the digital divide, which separates the computerized world from the rest, nor would I underestimate the importance of traditional books.