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 true value of leather lies in its durability and timeless appeal, not just its aesthetics.
If you are not willing to learn, no one can help you. If you are determined to learn, no one can stop you.
量子力学不仅仅是一个理论,它是一种理解现实的方式。