購(gòu)買(mǎi)舊書(shū),它們的詞與新詞相同,也可以去圖書(shū)館。
There is only one good, which is knowledge, and one evil, which is ignorance.
正向強(qiáng)化的實(shí)施方式比其數(shù)量更重要。
Don’t you wonder sometimes, what might have happened if you tried?
找出你是否可以信任某人的最好方法就是信任他們。