“The three fundamental Rules of Robotics…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…Three: a robot must protect its own existence as long as such protection does not conflict with the First and Second Laws.” – Isaac Asimov
“That being said, this morning my toaster tried to kill me and the waffle iron was looking at me funny.” – Isaac Asimov, moments later.
“Good morning!” said Bilbo, and he meant it. The sun was shining, and the grass was very green. But Gandalf looked at him from under long bushy eyebrows that stuck out farther than the brim of his shady hat.
“What do you mean?” he said. “Do you wish me a good morning, or mean that it is a good morning whether I want it or not; or that you feel good this morning; or that it is a morning to be good on?”
“All of them at once,” said Bilbo.
— The Hobbit (1937)