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The only purpose for which power can be rightfully exercised over any member of a civilized community， against his will， is to prevent harm to others.

廣告不會創造產品優勢。它只能傳達它。

I think that's one of the most important things in life: to feel good about yourself.

The joy of discovery in mathematics is unparalleled.

我的心快要從未修剪的胸膛跳出來。

Art is not a handicraft, it is the transmission of feeling the artist has experienced.