The key to credible causal inference is not just the method, but how well the method fits the question at hand.

You have to be fearless in order to succeed.

问余此世欲何为，度日安宁呱噪微。

未经审视的生活不值得过。

人需要困扰，困扰是心理健康的必需之物。

建筑应该挑战现状。