繁荣建立在五个支柱上：积极情绪、投入、人际关系、意义和成就。
Flourishing rests on five pillars: positive emotion, engagement, relationships, meaning, and accomplishment.
Ask not what your country can do for you --ask what you can do for your country.
The existence of a legal system is a matter of social fact.
The act of writing is an act of courage.
If you're not moving forward, you're falling behind.
无知永远不比知识更好。
纯数学和应用数学之间的相互作用是真正创新发生的地方。
If you want to see what this nation is all about, you have to ride the rails. Look outside as you speed through, and you’ll find the true face of America.
Believe you can and you're halfway there.