创新不是关于技术，而是关于解决问题。

I don't sing to be perfect, I sing to be alive.

The end of history will be a very sad time. The struggle for recognition, the willingness to risk one's life for a purely abstract goal, the worldwide ideological struggle that called forth daring, courage, imagination, and idealism, will be replaced by economic calculation, the endless solving of technical problems, environmental concerns, and the satisfaction of sophisticated consumer demands.

数学的历史是人类心灵独创性和创造力的证明。

There is no perfect knowledge which can be entitled ours, that is innate; none but what has been obtained from experience.

质量从来不是偶然的，它总是智慧努力的结果。