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。
Psychology should illuminate the practical workings of the mind, not just dissect its parts.
In the old world, you devoted 30% of your time to building a great service and 70% of your time to shouting about it. In the new world, that inverts.