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Small acts of kindness can boost your mood more than you might expect.
Certification standards are meaningless without rigorous enforcement.
数学不是一项观赏性运动。
The biggest risk is not taking any risk.
The minimum wage debate needs more data and less ideology.
如果你明智地利用经验,那么没有什么是浪费时间。
译文:立志别挑简单的目标,做事别躲困难的任务。