煤炭开采的创新不仅仅是关于开采，而是更智能、更安全、更尊重环境地开采。

The individual is reduced to a negligible quantity, perhaps less in his consciousness than in his habits and in the unconscious adjustments of his life.

The limits of my language mean the limits of my world.

我不考虑年龄。那些告诉我我太老了不能做某事的人，我只是忽略他们。

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

Aim to die broke. Give to your beneficiaries before you die； it’s more fun and useful. Spend it all. Your last check should go to the funeral home and it should bounce.