数学不仅仅是关于数字、方程、计算或算法：它是关于理解的。
Mathematics is not just about numbers, equations, computations, or algorithms: it is about understanding.
符号不仅仅是文化的反映，也是变革的工具。
Stay focused on what you can control, and don’t waste energy on what you can’t.
永远不要停止学习，因为世界永远不会停止变化。
There is no love that’s so right as admiration-based love, and that love should include the instructive dead. Somehow, I got that idea and I lived with it all my life and it’s been very very useful to me.
He was a man who had always been too proud to ask for help, and now he was too proud to accept it.
"A great story is one that stays with you long after you've finished reading."