A well-designed system should be easy to use, easy to understand, and easy to modify.

The past is always tense, the future perfect.

"The past is a foreign country; they do things differently there."

发现的喜悦是推动数学家前进的动力。

Small changes in the environment can have big effects on behavior.

一个公司的文化由其坚持的价值观定义，而不仅仅是它销售的产品。