Don‘t cry because it is over， smile because it happened。
不要因为结束而哭泣，微笑吧，为你的曾经拥有
我不是那种会让对我动力的爱减少的人。
最终，我们记住的不是敌人的话语，而是朋友的沉默。
The most important thing in computer graphics is to understand light and how it interacts with surfaces.
The PAC learning framework provides a formal way to quantify the learnability of a concept class.
The most important part of teaching is to teach what it is to know.