"They thought we were stupid to do it, (hide Jews) of course; in fact, it was beyond their comprehension that we would risk so much for Jews."

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In the case of complex personalities the matter stands thus: one of these can understand other men better than they can understand themselves, because within himself he has not only the character he is grasping, but also its opposite. Duality is necessary for observation and comprehension.

— Otto Weininger