Every tree planted today is a legacy for tomorrow's generations.

Teaching is not about imparting everything, but about guiding at the right moment.

"The magic of a book is that it can take you anywhere, even if you're just sitting in your room."

数学不仅仅是关于数字、方程、计算或算法：它是关于理解的。

All that we see or seem is but a dream within a dream.