The study of mathematics is a journey without an end.

常想到会悔恨终生，就不能不尽孝心；常想到度日的艰难，就不得不节约费用；常想到人的生命脆弱，就不得不珍惜心神；常想到世态人情，就不得不立志奋发；常想到法网恢恢，疏而不漏，就不能让自己胡作非为；常想到生命易失，就不得不忍气耐性。

The greatest virtue of man is perhaps curiosity.

Reading is to the mind what exercise is to the body.

Quality is not an act, it's a habit.

"The greatest enemy of knowledge is not ignorance, it is the illusion of knowledge."

穷人不是需要解决的问题，而是需要拥抱的机会。