One does not err by perceiving, one errs by clinging; but knowing clinging itself as mind, it frees itself. – Tibetan Book of the Dead
To be conscious that we are perceiving or thinking is to be conscious of our own existence.
~Aristotle (Greek Philosopher 384-322 BC)
I am therefore I think? I perceive therefore I am? Because I am conscious therefore I am aware that I am – even though consciousness is a mystery?