Book excerpt: Duty or Pleasure? This was the legendary choice which faced Hercules and which pre-eminent philosopher A.C. Grayling uses as the starting point of this masterful book. He shows us how much more people can understand about themselves and their world by reflecting on today's moral challenges. Above all, he explores the idea that certain demands and certain pleasures are necessary, not just because of their intrinsic merits but because of what they do for each other. With exceptional clarity and unrivalled prose, Grayling addresses the everyday ethical choices which confront us all.