Joseph P. Kauffman said this quote
“ You cannot be aware of yourself, for you are awareness itself. How can a witness witness itself? That is like trying to see your own eyes without a reflection, or cut a knife with the tip of its own blade—it is impossible. The subject can only observe the object; it cannot make an object out of itself. But by the very act of observing, you indirectly know yourself as the observer, as the subject. No witnessing of the witness is needed to prove its existence. ”