Babbage's Three Laws of Difference Engines

First Law: A difference engine must have at least six cogs.

Second Law: A difference engine must be able to operate a loom.

Third law: A difference engine must be able to kill a man, should the mood so take it.

That explains a lot,' he said. 'I suppose it's also why we've never glimpsed that giant compass in the corner of the Atlantic. I have to say, I'm a little disappointed.

Here's your first problem," he said, pointing at a sentence. "'Religion is the opium of the people.' Well, I don't know about people, but I think you'll find that the opium of pirates is actual opium.

Everybody clapped enthusiastically and Dr. Marx popped up from behind the podium, where he had been hiding all along. He was the hairiest man the pirates had ever seen. Several of the crew were actually worried for a moment that the Seaweed That Walked Like a Man had returned from one of their previous adventures to ambush them. His nose was hairy. His forehead was hairy. Even his hands were hairy. And his beard was a great bushy black number, which looked like he had sellotaped a bunch of cats to the bottom of his face and then frightened them with a loud noise.

I fear it is the end for us,’ wailed Marx as the bears inched closer. ‘Is this the way you saw yourself going. Pirate Captain:

‘In fact,’ said the Captain grumpily, ‘it’s pretty much the exact situation I usually try to cheer myself up with when I’m in a bit of a fix. “At least you’re not about to be eaten by bears and/or fall into a replica volcano,” I tell myself. So now I’ve got to come up with an even worse scenario, which is a nuisance.

Isaac Asimov's "Three Laws of Robotics"

A robot may not injure a human being or, through inaction, allow a human being to come to harm.
A robot must obey orders given it by human beings except where such orders would conflict with the First Law.
A robot must protect its own existence as long as such protection does not conflict with the First or Second Law.