质量不仅仅是缺陷的缺失；它是价值的存在。
Quality is not just the absence of defects; it is the presence of value.
If you keep learning all the time you have a huge advantage.
"Sometimes, the only way to stay alive is to keep moving."
"In mathematics, you don't understand things. You just get used to them."
创新不仅仅是新工具，更是新的思维方式。
Liberty is obedience to self-imposed law.