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The writer's duty is to write with rigor, with honesty, and to never accept compromises.

The function of entrepreneurs is to reform or revolutionize the pattern of production by exploiting an invention or, more generally, an untried technological possibility for producing a new commodity or producing an old one in a new way.

數(shù)學(xué)是一種超越文化和語(yǔ)言障礙的通用語(yǔ)言。