他认为，人不抱希望是很傻的。
It is silly not to hope, he thought.
Theorems are not discovered by accident.
Because we are food for worms, lads. Because, believe it or not, each and every one of us in this room...is one day going to stop breathing, turn cold and die.
Great engineering is invisible—it just works seamlessly.
所以，天地不夸耀自己的明亮，大水不夸耀自己的清澈，大火不夸耀自己的炎烈，有德之君不夸耀自己德行的高远，这样才能做众人的领袖。
"What lies behind us and what lies before us are tiny matters compared to what lies within us."
"Books are the quietest and most constant of friends; they are the most accessible and wisest of counselors, and the most patient of teachers."