The Hidden Rules Governing All Speech

Every time you speak, you are subconsciously pulling from a mental library of rules called langue. While you choose the specific words to say in the moment, you are strictly following a shared language code you never actually learned to build.

Think of it like a game of chess. Langue is the set of rules that everyone agrees on, while parole is the individual move you decide to make during a match. You can express infinite ideas because the underlying system provides the structure, even if you never think about that grammar while talking. This concept explains why we can all understand brand new sentences we have never heard before.