The First Law of Robotics, as famously stated in Isaac Asimov's science fiction works (and often depicted in movies based on his stories), is:

"A robot may not injure a human being or, through inaction, allow a human being to come to harm."

This law is the foundation of Asimov's robotic ethics and is often explored in his stories, showing the complexities and potential conflicts that arise when machines are tasked with protecting human life.