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The great advantage of telling the truth is that you don't have to remember what you said.
出外周游为人算卦的人与坐在家里不出去的人,他们谁得到的粮食多? 
行为的科学研究必须基于客观、可测量的数据。
敢于求知!要有勇气运用你自己的理智。
Parents wonder why the streams are bitter, when they themselves have poisoned the fountain.