The computer is the ultimate polluter: its feces are indistinguish- able from the food it produces.

"The greatest tragedy is not the brutality of the bad people, but the silence of the good people."

在统计工作中，正确的数学工具必须用于正确的问题，而且工具必须锋利。

世界不仅仅是感觉的总和，而是一个有组织的整体。

时机未到，却着急去做，就是急躁；时机成熟，却还不去做，就是愚蠢。