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The purpose of life is not to be happy. It is to be useful, to be honorable, to be compassionate, to have it make some difference that you have lived and lived well.
The world is before you, and you need not take it or leave it as it was when you came in.
你越把自己看作一个产品,你就越少把自己看作一个人。
科学的真正力量在于它能够在我们追求知识的过程中团结我们。