"The difference between correlation and causation is fundamental in empirical work."
相关性和因果关系之间的区别在实证工作中是根本性的。
Blow, winds, and crack cheeks! Rage!Blow!
The best films are the ones that make you think.
Every problem in mathematics is an opportunity to learn something new.
Education is an admirable thing. But it is well to remember from time to time that nothing that is worth knowing can be taught.
这就是所谓的适应习惯,安于风俗啊。
