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Every mental act has its place in the economy of life.

追求數學知識是一場永無止境的冒險。

"The best books are the ones that leave you a little different than when you started."

In the era of globalization, maintaining cultural identity is more important than ever.

In science, we try to explain what we don't understand. In mathematics, we try to understand what we can't explain.

有時候我真想放棄，但想到會讓很多人失望，我就堅持下來。