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A language cannot refer to an object in one way if it cannot refer to it on another as well).
Definition Object/Brandom: this is what it means to be an object: an equivalence class of mutually substitutable expressions stands for an object - so there are no natural languages that have only one word for an object (not even for "the absolute") - one could not talk about this object.
Expressive Vernunft Frankfurt 2000
Begründen und Begreifen Frankfurt 2001