Roy Porter, a social historian of medicine at London's Wellcome Institute, has written a dauntingly thick history of how medical thinking and practice has risen to the challenges of disease through the centuries. But delve into its pages and you'll find one marvellous piece of history after another. The obvious highlights are touched upon--Hippocrates introduces his oath, Pasteur homogenises, Jonas Salk produces the polio vaccine and so on--but there's also Dr. Francis Willis' curing of the madness of King George III, W.T.G. Morton's aggressive use of ether in surgery and research on digestion conducted using a man with a stomach fistula (if you don't know what that means, you may not want to know). Porter is straightforward about his deliberate focus on Western medical traditions, citing their predominant influence on global medicine, and with The Greatest Benefit to Mankind he has produced a volume worthy of that tradition's legacy.