It is work, work that one delights in, that is the surest guarantor of happiness. But even here it is a work that has to be earned by labor in one's earlier years. One should labor so hard in youth that everything one does subsequently is easy by comparison.
工作，使人快乐的工作，才是幸福最可靠的保证。但即使在这里，这也是一项早年必须靠劳动才能获得的工作。一个人年轻时应该努力工作，这样他以后做的每件事相比之下都是容易的。
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