# Consciousness is what disappears every night when we fall into dreamless sleep and… by Giulio Tononi > "Consciousness is what disappears every night when we fall into dreamless sleep and reappears when we wake up or dream." > **— Giulio Tononi**, *Integrated Information Theory talks and writings, wording candidate* Verification Status: Unverified — exact wording/source has not yet been independently confirmed against a primary source; source clue: Integrated Information Theory talks and writings, wording candidate.