Book excerpt: A famous legend surrounding the creation of Anna Karenina tells us that Tolstoy began writing a cautionary tale about adultery and ended up by falling in love with his magnificent heroine. It is rare to find a reader of the book who doesn't experience the same kind of emotional upheaval: Anna Karenina is filled with major and minor characters who exist in their own right and fully embody their mid-nineteenth-century Russian milieu, but it still belongs entirely to the woman whose name it bears, whose portrait is one of the truest ever made by a writer.