I have come to believe that a great teacher is a great artist and that there are as few as there are any other great artists. Teaching might even be the greatest of the arts since the medium is the human mind and spirit.

"In the end, it is not the fame or the accolades that matter, but the impact a writer's words have on the hearts and minds of their readers."

数学不是关于数字、方程、计算或算法：它是关于理解的。