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勇气并不总是咆哮。有时候,勇气是一天结束时那个轻声说"明天我再试一次"的声音。
I would not dare to say that there is a direct relation between mathematics and madness, but there is no doubt that great mathematicians suffer from maniacal characteristics.
写作是一种耐心的行为,等待合适的词语到来。