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譯文：古代的士、農、工、商四種職業不同但遵循的道是相同的，他們盡自己的心力，在這一點上是一樣的。

兒童書籍應該既挑戰又安慰。

You must take personal responsibility. You cannot change the circumstances, the seasons, or the wind, but you can change yourself. That is something you have charge of.

The best ideas come when you’re not looking for them.