I don't think that when people grow up, they will become more broad-minded and can accept everything.Conversely, I think it's a selecting process, knowing what's the most important and what's the least. And then be a simple man.

There is no wasted journey in life, every step counts.

Our modern skulls house a Stone Age mind.

真相总是革命性的。

数学的力量来自于它的抽象和概括能力，将具体问题转化为普遍真理。