"The dead are never far from us. They're in our hearts and in our minds and in the end, they're all we've got."

数学家的工作永无止境；总有新的问题要问，新的谜题要解。

The best ideas come when you’re not looking for them.

闹市是赚钱的地方，安静的地方才能休养身体。

现代时代最重要的政治发展是现代国家的崛起。

Happiness is not a matter of intensity but of balance, order, rhythm and harmony.

市场经济的本质是自由竞争，而竞争的本质是自由进入。

No medicine cures what happiness cannot.

我不会害怕。

Civilization as it is known today could not have evolved, nor can it survive, without an adequate food supply.