The map is not the territory.

Mathematics and logic have been proved to be one; a fact from which it seems to follow that mathematics may successfully deal with non-quantitative problems in a much broader sense than was suspected to be possible.

Any object of thought is both 'more than what we think, and different'.

He who learns and learns and yet does not know what he knows, is one who plows and plows yet never sows.

The map is not the territory, the word is not the thing it describes. Whenever the map is confused with the territory, a 'semantic disturbance' is set up in the organism. The disturbance continues until the limitation of the map is recognized.

The map is not the territory... The only usefulness of a map depends on similarity of structure between the empirical world and the map.

Who rules our symbols, rules us.