"All true stories are about the meeting of opposites."

赏赐并不能让人欢喜，责罚也不能让人畏惧。 

对我们工作的真正考验在几十年后，当它仍然被喜爱和使用时。

好的科学需要耐心和坚持。

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

译文：老天爷的心思猜不透，但做人的道理容易守住。