One of Britain's leading novelists, Ian McEwan is the author of such acclaimed works as the Booker Prize-winning Amsterdam and the hugely popular Atonement, which was made into an Oscar-nominated movie. Now, he's back with Lessons, a story about a fictional alter-ego, Roland, with whom McEwan shares an intimate background -- until a transformative event leads Roland down a very different path. Ian McEwan spoke to Eleanor Wachtel onstage before a live audience at the Toronto International Festival of Authors.