"The difference between correlation and causation is fundamental in empirical work."

离愁浩荡随着夕阳西下，挥鞭东指便是天涯。

有些人不喜欢改变，但如果替代方案是灾难，你就需要接受改变。

避税是唯一有回报的智力追求。

Women in science don't need role models; we need equal opportunities.