Just as Gödel showed that no formal system can be both complete and consistent, language as a system cannot fully encapsulate the entirety of cognitive processes without relying on foundational assumptions that it cannot internally validate. Attempting to describe thought without acknowledging this limitation is akin to seeking completeness in an inherently incomplete framework. Without language, the discussion becomes impossible, rendering the initial claim fundamentally flawed.
If you stand outside under the sun, do you have to be able to write the word "sun" in order to feel warm?