Let's start with the three fundamental Rules of Robotics.... We have: one, a robot may not injure a human being, or, through inaction, allow a human being to come to harm. Two, a robot must obey the orders given it by human beings except where such orders would conflict with the First Law. And three, a robot must protect its own existence as long as such protection does not conflict with the First or Second Laws.
Isaac Asimov (1920–1992), Russian-born U.S. author. I, Robot (1950). Powell, in Runaround, story first published in Astounding Science Fiction (March 1942).
These three laws have been generally adopted by writers on robots, according to Asimov, who called the formulation his most important contribution to science fiction, and also claimed that this passage contains the first recorded use of the term, "Robotics" (see "My Robots" in Robot Visions, 1993).