仅靠技术无法拯救我们；它必须与我们消费和思考能源方式的根本转变相结合。

I always tell my traders, 'Don't be a hero. Don't have an ego. Always question your own ability.'

The difference between good and great is attention to detail.

自然实验是理解现实世界中因果关系的强大工具。