# Once a computer achieves human intelligence it will necessarily roar past it by Ray Kurzweil > "Once a computer achieves human intelligence it will necessarily roar past it." > **— Ray Kurzweil**, *The Age of Spiritual Machines (1999)* Verification Status: Unverified — exact wording/source has not yet been independently confirmed against a primary source; source clue: The Age of Spiritual Machines (1999).