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.
数学的本质在于它的自由。
"We are all haunted by the ghosts of our past, but it's up to us whether we let them haunt us or guide us."
在以情动人前,你自己要先被打动。在你催人泪下前,你自己要热泪盈眶。在你以理服人前,你自己要坚信不疑。