Great leaders don't just manage; they inspire, motivate, and elevate those around them.
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。
我不是没有素材,而是没有时间。
The time which we have at our disposal every day is elastic; the passions that we feel expand it, those that we inspire contract it; and habit fills up what remains.
常规不是关于僵化;它是关于孩子的安全感和可预测性。