A good mathematician is someone who can see analogies between theorems; a great mathematician is someone who can see analogies between analogies.
Innovation is not just about creating new products; it's about rethinking how we do everything.
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。