The 3 Laws of Robotics sets:
1.-A robot may not injure a human being or, through inaction, allow a human being to come to harm.
2.-A robot must obey the orders given to it by human beings, except where such orders would conflict with the First Law.
3.-A robot must protect its own existence as long as such protection does not conflict with the First or Second Laws.
"RUNAROUND" ISAAC ASIMOV 1942