I, Robot (Pre-intermediate level)

1) A robot must not harm a human. And it must not allow a human to be harmed.
2) A robot must obey a human's order., unless that order conflicts with the First Law.
3) A robot must protect itself, unless this protection conflicts with the First or Second Laws, Handbook of Robotics, 2058 A.D.

Isaac Asimov's classic collection of stories about a society where humans and robots live and work together on earth and in outer-space, is both disturbing and prophetic.