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交换、交易和互换的倾向普遍存在于所有人之中,而在其他动物种族中找不到。
The propensity to truck, barter, and exchange one thing for another is common to all men, and to be found in no other race of animals.
You can’t do anything if you’re not willing to take risks.
The essence of science lies in its relentless pursuit of truth through observation, experimentation, and reasoning.
最好的管理是一门真正的科学,建立在明确的法律、规则和原则之上。
I think the most important thing is to be honest and truthful with what you say and what you do.