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

星辰在其永恒的运行中，遵循着与最微小原子相同的法则。

我们今天所做的选择将塑造明天的世界。

History is not the past. It is the method we have evolved of organizing our ignorance of the past.

Success comes from persistence and the willingness to learn from failures.

最大的爱国主义是当你的国家行为不光彩、愚蠢、恶毒时告诉它。