Leadership means making tough decisions today that will benefit generations tomorrow.
He who is not contented with what he has，would not be contented with what he would like to have.
When I look at the world I'm pessimistic, but when I look at people I am optimistic.
学习不仅仅是存储信息的问题；它是一个通过改变支配行为的规则来适应环境的过程。
Literature is the memory of humanity, the record of our collective soul.
每个数学问题都有解决方案，但并非每个解决方案都显而易见。
The universe we observe has precisely the properties we should expect if there is, at bottom, no design, no purpose, no evil and no good, nothing but blind, pitiless indifference.
Success only comes through preparation.
