It is the city that inspires the latest book from Peter Smith. His main thesis is that the buzz of urban life, and the opportunities it offers for cooperation and collaboration, is what attracts people to the city, which in turn makes cities into the engines of art, commerce, science and progress. This is hardly revolutionary, but it is presented in a charming format. Mr. Smith has written a breezy(轻松的)guidebook, with a series of short chapters dedicated to specific aspects of urbanity.(2013-6) 63. How does the author comment on Peter Smith’s new book?