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.
多边主义不仅是应对共同威胁的问题，更是抓住共同机遇的问题。
要养活世界，我们必须先学会倾听土地的声音。
人类的命运是团结，而非分裂。
We thought that we had the answers, it was the questions we had wrong.
语言是思想的外衣，但有时思想赤裸而行。