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True friends are not those who have endless topics to talk about, but those who can stay together without feeling awkward even if they don't speak.

When I look at the world I'm pessimistic, but when I look at people I am optimistic.

數學的力量在于它的普遍性和抽象性。

The only way to do great work is to love what you do.

海鮮的真正成本不僅僅是標價，還有我們未償還的環境債。