- A robot may not injure a human being or, through inaction, allow a human being to come to harm.
- A robot must obey the orders given it by human beings except where such orders would conflict with the First Law.
- A robot must protect its own existence as long as such protection does not conflict with the First or Second Laws.
— Isaac Asimov, Runaround, Handbook of Robotics, 56th Edition, 2058 A.D.