Most of those non-Jewish scientists who remained, with Max Planck at their head, attempted to preserve the integrity and political neutrality of scientific research by paying lip-service to the regime. Planck began to address meetings of the Kaiser Wilhelm Society with the Nazi salute and the Hitler greeting, in an attempt to avoid further purges. Werner Heisenberg, a physicist awarded the Nobel Prize for his development of quantum mechanics, argued that it was important to remain in Germany to keep scientific values intact. But in time it was to become clear that they were fighting a losing
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