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經濟學家最重要的技能是清晰地思考權衡取舍。

The world is full of small pleasures; the trick is to find them.

Words are, in my not-so-humble opinion, our most inexhaustible source of magic.

沒有規則，就沒有真正的藝術。

"Prime numbers are what is left when you have taken all the patterns away. I think prime numbers are like life. They are very logical but you could never work out the rules, even if you spent all your time thinking about them."