我是自由的，无论周围有什么规则。如果我觉得它们可以忍受，我就忍受它们；如果我觉得它们太讨厌，我就打破它们。我是自由的，因为我知道只有我自己在道德上对我所做的一切负责。
"I am free, no matter what rules surround me. If I find them tolerable, I tolerate them; if I find them too obnoxious, I break them. I am free because I know that I alone am morally responsible for everything I do."
Good econometrics is like good carpentry—it's all about using the right tool for the job.
翻译：善行不积累不足以成就美名，恶行不积累不足以灭亡自身。
Ignorance more frequently begets confidence than does knowledge.