For most thinkers since the Greek philosophers, it was self-evident that there is something called human nature, something that constitutes the essence of man.
对于自希腊哲学家以来的大多数思想家来说，有一种叫做人性的东西是不言而喻的，它构成了人的本质。
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It is self-evident that we will never have enough resources to meet the demand.