Rarely has scholarship been so much fun. This book is an adjunct to the exhibition of the same name at the British Library (free, and showing till 3rd April 2011), and it traces the history of our language from its now unrecognisable origins in Saxon times ('Beowulf') to present day txtspk, gathering in Chaucer, Caxton, Shakespeare, the King James Bible on the way - right up to regional and colonial dialects (how to speak pukka) and much else. For slang and profanity you have to visit the exhibition,(where you can also sample video clips) or go to the lectures. But the book gives a wonderful sample of what's on offer there. It is authoritative and well written; but also huge fun; beautifully produced and illustrated, with texts ranging from the Bible to childrens books to shipping inventories to political tracts to posters to advertisements to linguistic frivolities; all clearly explained and set in context without any trace of solemnity. A book to enjoy from cover to cover, or to dip into from the coffee table.