Death is present every day, but we don't see it until it touches us directly.

Nobody understands when a woman makes a choice to marry and have children, in one way her life begins, but in another way, it stops. You build a life of details, and you just stop and stay steady, so that your children can move.

模型只是模型，而非事物本身。因此我们既不能过分依赖它们，也不能完全不依赖。

好的研究关键不仅在于方法，还在于问题的清晰性和数据的质量。