'Into the Silence: The Great War, Mallory and the Conquest of Everest' by Wade Davis is a big book in many dimensions. Physically the hardback is heavy, unwieldy reading as I stood on the train into London yesterday. It is long - I am in the early 200s and we are only embarking on Mallory's first (of three) expeditions to Everest; and, of theme. It is not simply a book about a failure to conquer the highest of peaks, but of why such an attempt was so important, at that time, when the flower of British youth had been decimated by the Great War, lost to the mud of Flanders, and society yearned for triumph without that appalling adversity. Conquering Everest was to help re-establish an Empire at ease with itself as it reached, as it happened, its greatest geographical extent. The failure of that attempt is to come but the as portrait of its age, seen through the particular lens of well-heeled adventurers (as well as explorers and scientis...