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善师四夷者,能制四夷;不善师外夷者,外夷制之。
出自《海国图志序》。善于学习外国的长处,就能够征服外国;不善于学习外国的长处就会被外国所征服。
真相很少是纯粹的,也从不简单。
The true journey is not about discovering new landscapes, but about seeing with new eyes.
The best way to predict the future is to create it.
The most beautiful things in life are free.
The conjectures of the Langlands program are a challenge to the next generation of mathematicians.