Jean-Pierre Changeux is a world-famous neurobiologist. In an era of specialization, he is one of the rare scientists who has not only disregarded interdisciplinary boundaries, but in fact bridged them. Published originally in France, where it was a runaway bestseller, his Neuronal Man is the most wide-ranging and in-depth synthesis of our current knowledge about the human brain-a balance sheet of 20 years' worth of discoveries as revolutionary as...