There is nothing permanent except change.

The challenge in computer graphics is to simulate the complexity of the real world with the simplicity of mathematical models.

解释：人不博览群书，不了解古今，不能识别世间事物，不知道是与非，就像盲人看不到颜色 、聋人听不到声音、鼻塞的人闻不到花香一样啊。

我相信我们都是自己的墓地；我们蹲伏在自己过去的坟墓之间。

The individual investor should act consistently as an investor and not as a speculator.