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数学的进步是通过它能解决的问题数量来衡量的。
The progress of mathematics is measured by the number of problems it can solve.
I think people believe in heaven because they don’t like the idea of dying, because they want to carry on living and they don’t like the idea that other people will move into their house and put their things into the rubbish.
The body remembers what the mind tries to forget.
The effects of policy changes are often more nuanced than simple economic models suggest.