最好的数学是你第一眼看不明白的数学。
The best mathematics is that which you do not understand at first glance.
历史不是机械的，因为人们有自由去改变它。
Every image embodies a way of seeing.
The principle goal of education in the schools should be creating men and women who are capable of doing new things, not simply repeating what other generations have done.
PAC学习框架提供了一种形式化的方法来量化概念类的可学习性。
Army’s value = loyalty,duty, respect, selfless, service, honor, integrity, personal courage .
