Zadie Smith's "On Beauty" is a funny, powerful and moving story about love and family. Why do we fall in love with the people we do? Why do we visit our mistakes on our children? What makes life truly beautiful? Set in New England mainly and London partly, "On Beauty" concerns a pair of feuding families - the Belseys and the Kipps - and a clutch of doomed affairs. It puts low morals among high ideals and asks some searching questions about what life does to love.