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注意力是心靈以清晰生動的形式，從幾個同時可能出現的對象或思緒中占據一個。

生命短暫，必須充分利用。

Man is neither wholly good nor wholly evil, but a mixture of both.

"Un libro es una conversación entre el autor y el lector a través del tiempo."

Education does not plant the faculties in us like seeds in a garden; it merely directs them in the way they should go.

"We are bulletproof, but love is not."

Stay hungry, stay foolish.

"The only way to deal with an unfree world is to become so absolutely free that your very existence is an act of rebellion."