一个人对自己的态度是过上长寿且相对幸福生活的最重要因素。
One’s attitude to oneself is the single most important factor in living a long and reasonably happy life.
The art of writing is the art of discovering what you believe.
War is what happens when language fails.
The essence of causal inference is to go beyond the data and ask what would happen if we intervene.
Never stop learning, because the world never stops changing.