Natural experiments are a powerful tool for understanding causal relationships in the real world.

我认为能够自嘲是很重要的。

我认为你能做的最好的事情就是对你所拥有的心存感激。

The story is not in the plot; the plot is the net you throw over the story to catch it.

"The power of a story lies not in its truth, but in its ability to make us believe."