Wisdom acquisition is a moral duty.It's not something you do just to advance in life...You are not going to get very far in life based on what you already know.You're going to advance in life by what you learn after you leave here.
Mathematics is not about numbers, equations, computations, or algorithms: it is about understanding.
数学不是关于数字、方程、计算或算法的：它是关于理解的。
除非你学会如何失败，否则你无法获胜。
"Randomized experiments are the gold standard for causal inference, but they are not always feasible."