THE FIRST IDEA: HOW SYMBOLS, LANGUAGE AND INTELLIGENCE EVOLVED FROM OUR PRIMATE ANCESTORS TO MODERN HUMANS Stanley I. Greenspan and Stuart G. Shanker 2004. Cambridge, Mass.: Da Capo Press Price UK £14.99, US $25.00 ISBN 0-7382-0680-6 - Colin Renfrew (Brain: a journal of neurology, 2005)