A good mathematician is someone who can see analogies between theorems. A great mathematician is someone who can see analogies between analogies.

If you are under the impression you have already perfected yourself， you will never rise to the heights you are no doubt capable of.

端正其义而不谋求私利，阐明其道而不计较功利。

有一个快乐的境况出现，但就有一个不快乐的境况相对立；有一处优美的风景出现，但就立即有一处不优美的风景相抵销。

技术不仅仅是一种工具，它可以成为一个伟大的均衡器。

艺术家并不重要。只有他创造的东西才重要。