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心理學理論必須通過實踐經驗的檢驗。

The business of education is not to make the young perfect in any one of the sciences, but so to open and dispose their minds as may make them capable of any, when they shall apply themselves to it.

在冬天的深處，我發現我內心有一個不可戰勝的夏天。

求和者就是希望鱷魚最后一個吃自己的人。

唯一真正的監獄是恐懼，唯一真正的自由是從恐懼中解脫。

美國優先！

If you don't drive your business, you will be driven out of business.

Invention is the mother of necessity.