All human knowledge is from experience.

The question is not whether the thing exists， but whether it has any essence which is capable of existence without us.

History is the memory of a nation.

系统越复杂，理解越少。

“千里之行，始于足下。”

The biggest challenge is to be yourself in a world that is trying to make you like everyone else.

写作是理解我们挣扎的一种方式。