The development of efficient algorithms is as much an art as it is a science.
古代的学者，为自己才学不高而担忧，就发奋学习，迎头赶上；现在的文士，为自己才学不高而羞愧，就隐满短处，避忌批评。
The essence of causal inference is to go beyond the data and ask what would happen if we intervene.
想大事，想长远。最大的风险是不承担任何风险。
The novel is a great discovery: far greater than Galileo's telescope or somebody else's wireless. The novel is the highest form of human expression so far attained. Why? Because it is so incapable of the absolute.