"I am very impressed with this book. It offers much more depth on most of the historical periods than any other book I've read. . . . I couldn't stop reading it."--Michael Barbour, University of California, Davis"This stimulating book covers a great deal of ground--from Classical and Christian theories to the Enlightenment and Romanticism and up to modern times--without overloading the reader in mere detail."--Roy Porter, Wellcome Institute
