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幸福不是现成的东西,它来自你自己的行动。
"Happiness is not something ready made. It comes from your own actions."
The proper study of psychology is the prediction and control of behavior.
In auctions, the winner's curse is not that you win, but that you pay too much for what you win.
数学不是关于数字、方程、计算或算法的:它是关于理解的。
There is no such joy in the tavern as upon the road thereto.