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Life is like a mirror, if you frown at it, it frowns back; if you smile, it returns the greeting.

The best economic solutions are often counterintuitive.

The power of abstraction is that it allows us to ignore irrelevant details and focus on the essential aspects of a problem.

To write is to carve words into the flesh of time.

質(zhì)量不是概念；它是一種現(xiàn)實。