actor: lance henriksen (gif)

In Aliens, Bishop’s (Lance Henriksen) line about him being incapable of hurting a person or letting anyone come to harm are a direct reference to Issac Asimov’s Three Laws of Robotics, more specifically the First Law: “A robot may not injure a human being nor, through inaction, allow a human being to come to harm.” (the Second Law is “A robot must obey the orders given by a human being except where it would conflict with the First Law; the Third Law is, "A robot must protect its own existence except where it would conflict with the First or Second Laws.”). Asimov eventually introduced a “Zeroth” Law: “A robot may not injure humanity nor, through inaction, allow humanity to come to harm” (x).