"Randomized experiments are the gold standard for causal inference, but they are not always feasible."

What I feared most for myself at your age was not poverty, but failure.

"The power of a story is in its ability to inspire compassion."

The most important thing in science is not to solve problems, but to ask the right questions.

我们不只是卖衣服，我们卖的是一种生活方式。