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成功不是幸福的关键。幸福才是成功的关键。
没有听到的不如听到的,听到的不如见到的,见到的不如了解到的,了解到的不如去实行,学问到了实行就达到了极点。
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.