"In observational studies, we often have to rely on assumptions that are not directly testable."
在观察性研究中,我们常常不得不依赖于无法直接检验的假设。
灵魂是一团必须用美来滋养的火。
金钱让事情变得复杂,但它改变不了艺术关乎生死的事实。
Every dictatorship is a system of organized forgetting.