Groves was bereft of tact, sensitivity, cultural awareness, and human sympathy for either the Japanese or the bevy of Nobel laureates whom he commanded. He harassed and goaded the scientists as if they were army engineers building a bridge. Yet his effectiveness demands the respect of history. His deputy, Col. Kenneth Nichols, described him as “the biggest sonofabitch I’ve ever met in my life, but also one of the most capable. He had an ego second to none…tireless energy, great self-confidence and ruthlessness. I hated his guts and so did everyone else, [but] if I was to have to do my part all
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