The cognitive map is not a picture or a model in the head, but a dynamic, changing representation of the environment.

The only thing that makes life possible is permanent, intolerable uncertainty; not knowing what comes next.

如果名分不正理论上便讲不通，理论上讲不通，事情便办不成；……因此，君子给某种事物起名字时，就一定要在理论上讲得通，在实践上就一定能行得通。