每个人出生时都是许多人，死时却是一个人。

统计学中最重要的不是数字，而是产生这些数字的方法及其背后的意义。

"In observational studies, we often have to rely on assumptions that are not directly testable."

Success comes when you believe in yourself.

品质在价格被遗忘后仍会被长久铭记。