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Mathematics is a creative endeavor, just like art or music.

Start where you are, with what you have. Make something of it. Never be satisfied.

他不是在忙著出生，而是在忙著去死。

Economic development must be coordinated with environmental protection.

我不喜歡被限制，我總是嘗試做不同的事。

In the end, it is not the years in your life that count, but the life in your years.

真正的美國發現還在我們面前。我們精神、我們人民、我們強大而不朽的土地的真正實現尚未到來。