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Consciousness is the cutting edge of the struggle for existence.
译文 :做学问的人,只要事事留心认真、一丝不苟,德行、学业的进步就会像涓涓流水一样不会终止。
The unity of Europe is a historical necessity.
学习的最好方法就是教。
The world is full of signs, but we have forgotten how to read them.