Reflect upon your present blessings, of which every man has plenty; not on your past misfortunes, of which all men have some.
「释义」:但凡学习不勤奋的人,必定是志向不够坚定。
The best way to find yourself is to lose yourself in the service of others.
Mathematics is not a careful march down a well-cleared highway, but a journey into a strange wilderness, where the explorers often get lost.