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理性的人適應世界，非理性的人堅持讓世界適應自己。因此，所有的進步都依賴于非理性的人。

The greatest obstacle to being heroic is the doubt whether one may not be going to prove one's self a fool; the truest heroism is to resist the doubt; and the profoundest wisdom, to know when it ought to be resisted, and when it be obeyed.

教師必須為形成較好人類而獻出一切。

I think music is a language that everybody understands.

Memory is like a phantom, or like a friend who betrays you.