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"Education is the most powerful weapon which you can use to change the world."

作家是一個總是試圖創造新事物、原創事物、前所未見事物的人。

Profitability and sustainability are not mutually exclusive—they must go hand in hand.

做數學就是探索一個思想的宇宙，唯一的限制是你的想象力。