Origins of Sex : A History of the First Sexual Revolution, Paperback by Dabhoiwala, Faramerz, ISBN 0241955963, ISBN-13 9780241955963, Like New Used, Free P&P in the UK

For most of western history, all sex outside marriage was illegal. Between 1600 and 1800, this entire world-view was shattered by revolutionary new ideas. This book shows that the creation of this modern culture of sex was a central part of the Enlightenment, that helped create a new model of western civilization.