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数学中最重要的是理解概念,而不仅仅是记忆公式。
The most important thing in mathematics is to understand the concepts, not just to memorize formulas.
To kill an error is as good a service as, and sometimes even better than, the establishing of a new truth or fact.
一本书永远是通往另一个世界的敞开之门。
过去从未死去,它甚至不是过去。
最危险的武器不是杀人的武器,而是改变思想的武器。
"Randomized experiments are the gold standard for causal inference, but they are not always feasible."
世界上最好和最美丽的东西是看不见甚至摸不到的 - 它们必须用心去感受。