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真正使我感兴趣的是上帝创造世界的时候有没有别的方案可选。
The improvement of the productive powers of labor, and the greater part of the skill, dexterity, and judgement with which it is anywhere directed or applied, seem to have been the effects of division of labor.
生存还是毁灭。这其实不是一个问题。
The greatest discovery of my generation is that human beings can alter their lives by altering their attitudes of mind.