To explain how the metaphor of the map relates to knowledge, Alfred Korzybski is famously quoted as saying that ‘The map is not the ’.

The quote you're referring to is "The map is not the territory." This metaphor by Alfred Korzybski is a statement about abstraction, meaning that an abstraction derived from something, or a response to it, is not the thing itself. For example, the map of a place is not the actual place itself, but a representation or a model of it.

In relation to knowledge, this metaphor suggests that our understanding or perception of reality is not reality itself, but our 'map' or model of it. Our 'maps' are formed by our experiences, beliefs, and the information we have. They help us navigate the 'territory' of reality, but they are not perfect and can be flawed or incomplete.

Therefore, it's important to remember that our knowledge or understanding of something (the map) is not the thing itself (the territory), and there may be more to learn or discover.