感谢一位改变了你生活的老师。
We are all looking for a way to prove our existence.
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。
Quality should never be compromised, even when pushing for efficiency.
The true meaning of life is to plant trees, under whose shade you do not expect to sit.