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。
每一个人都是宇宙的一部分。
光的质量就是空间的质量。
Greatness is not a skill, it's an attitude.
Sustainability isn't a trend—it's our responsibility to the future.