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在科学领域,每一个被回答的问题都会引出十几个等待探索的新问题。
The world is so full of a number of things, I'm sure we should all be as happy as kings.
现今的士人用身于世,还不如商人使用一枚钱币时谨慎。 
Courage is not the absence of fear, but the triumph over it.