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In mathematics, the art of proposing a question must be held of higher value than solving it.
只要一个女人看上去比她自己的女儿小十岁,她就一定会心满意足。
艺术应该让舒适的人感到不安,让不安的人感到舒适。
Curiosity is the driving force behind all great mathematical discoveries.
A person may cause evil to others not only by his actions but by his inaction, and in either case, he is justly accountable to them for the injury.