The most important part of teaching is to teach what it is to know.
在我的一生中，大自然的新景象让我像孩子一样欢喜。
Transparency builds trust, and trust builds lasting relationships.
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。