耐心是一种美德，我正在学习耐心。这是一门艰难的课程。

投资新技术不是可选的，而是能源未来的必要条件。

The goal of software engineering is to control complexity, not to create it.

自由不仅仅是摆脱枷锁，而是以尊重和增进他人自由的方式生活。

The dog is called Sandy. I like Sandy. He is not clever but he is very cheerful.

最伟大的真理常常是我们无法用语言表达的。

"The important thing in science is not so much to obtain new facts as to discover new ways of thinking about them."