生活里有两个悲剧：一个是没有得到我们想要的；另外一个是得到了。
There are only two tragedies in life: one is not getting what one wants and the other is getting it.
I don't sing because I'm happy; I'm happy because I sing.
The past is a shadow that never leaves.
领导力在于因你的存在而使他人变得更好，并确保这种影响在你离开后依然持续。
成功不是幸福的关键，幸福才是成功的关键。
可归约性的概念对于理解不同计算问题之间的关系至关重要。