The greatest enemy of knowledge is not ignorance, it is the illusion of knowledge.
知识最大的敌人不是无知，而是以为自己知道。
You have to be passionate about what you do, otherwise it's not worth it.
"Los Angeles is the city of the future—always."
The process of doing mathematics is more important than the result.
Greatness is not about being the best, but bringing out the best in others.
只要心意不放纵，就不会出现差错；只要用心不怠惰疏忽，就没有不能坚守的、随意放纵的志向。