The creative act is not pure. History evidences it. Ideology demands it. Society exacts it. The artist loses his freedom the moment he creates a work of art.

Sustainability is not an option; it's a responsibility we owe to future generations.

人的生命是有限的，但为人民服务是无限的。

轧棉机的发明纯属偶然；那时我还很年轻，非常贫穷，对我来说从中实现一些价值是一个重要的目标。

In business, if you're not moving forward, you're falling behind.

众所周知，同样的环境可能以非常不同的方式影响不同的个体。

追求数学知识是一段永无止境的旅程；总有更多的东西等待发现和理解。