圆的周长大于任何内接等边多边形的周长,小于任何外切多边形的周长。
I'm not perfect, but I'm perfectly me.
The world is not a wish-granting factory.
The most important thing in directing is to have a clear vision of what you want to achieve.
活着就是为了改变世界,难道还有其他原因吗?
每个故事都是关于死亡的故事,但也许每个故事也都是关于生命的故事。
To live remains an art which everyone must learn,and which no one can teach.