人类唯一需要恐惧的,就是恐惧本身。
现今的士人用身于世,还不如商人使用一枚钱币时谨慎。 
A good mathematician is one who can see analogies between theorems; a great mathematician is one who can see analogies between analogies.
顺应世间的变化,时时保持慈悲之心。