It takes great wit and interest and energy to be happy. The pursuit of happiness is a great activity. One must be open and alive. It is the greatest feat man has to accomplish.
快乐需要极大的智慧、兴趣和精力。追求幸福是一项伟大的活动。一个人必须是开放的，充满活力的。这是人类必须完成的最伟大的壮举。
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