Image of Joseph Kosuth’s One and Three Chairs, 1965 (on display in various versions around the world). The artwork consists of a chair, a photograph of the chair, and the dictionary definition of ‘chair’.
1931 notebook entry from Ludwig Wittgenstein (Culture and Value 10e):
The limits of language is shown by its being impossible to describe the fact which corresponds to (is the translation of) a sentence, without simply repeating the sentence. (This has to do with the Kantian solution of the problem of philosophy.)