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如果一個人行為不端正，內心不純潔，那么權勢和富貴都會像云煙一樣消散。

要成為一個好的數學家，你需要既有直覺又有嚴謹。

Sustainability isn't an option—it's a responsibility we owe to future generations.

Music is my therapy.

The books that the world calls immoral are books that show the world its own shame.

教育是一盞燈，但許多人從未找到開關。