可信因果推断的关键不仅是方法，还有方法与当前问题的契合度。
The key to credible causal inference is not just the method, but how well the method fits the question at hand.
希望是一种强大的动力，但必须与行动相结合才能有效。
"Literature is the mirror of society, reflecting its virtues and vices with unflinching honesty."
The history of life is a history of adaptation.
I am not afraid of death, I just don't want to be there when it happens.