"Causal inference requires careful thought about the assumptions underlying your analysis."
过去从未死去，它甚至不是过去。
In the realm of attosecond physics, we are not just observers but time travelers, capturing the fleeting dance of electrons.
写作就是抵抗遗忘。
如今你修习先王之术，仰慕圣人之义，诵读诗书，遍览百家之言，不可胜数。甚至还将它们抄写于竹帛上。
天才…意味着不仅仅是以一种不同寻常的方式来感知的能力。
The more I learn, the more I realize how much I don't know.