You can't manage what you don't measure.
你无法管理你无法衡量的东西。
数学不仅仅是关于数字、方程、计算或算法:它是关于理解的。
History is, above all else, the creation and recording of that heritage; progress is its increasing abundance, preservation, transmission, and use.
成功是我他妈唯一的选择,失败不是。