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。
The study of economic history is not just about the past; it’s about understanding the roots of present inequalities.
一个好的抽象是捕捉概念的本质方面,同时忽略无关的细节。
Abstraction is the key to managing complexity in software systems.