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。
"真正的自由不是没有束缚,而是在束缚中找到自己的方向。"
Every decision we make today plants a seed for the forests of tomorrow.
UNIX is very simple, it just needs a genius to understand its simplicity.