Douglas Hofstadter on Truth

Relying on words to lead you to the truth is like relying on an incomplete formal system to lead you to the truth. A formal system will give you some truths, but as we shall soon see, a formal system, no matter how powerful—cannot lead to all truths.

 -- Douglas Hofstadter

https://www.goodreads.com/book/show/24113.G_del_Escher_Bach