A mathematician is a person who can find analogies between theorems; a better mathematician is one who can see analogies between theories and the best mathematician can notice analogies between analogies.
数学家是能在定理间找到类比的人；更好的数学家能在理论间看到类比；而最优秀的数学家能注意到类比之间的类比。
破坏其土壤的国家就是自取灭亡。
Democracy is a device that ensures we shall be governed no better than we deserve.
一个破坏其土壤的国家是在自我毁灭。
"Every word is a choice, and every choice carries a consequence."
最成功的领导者是那些倾听多于说话，并从周围每个人身上学习的人。