This is a quote from the book "Animal Farm" by George Orwell
... her the Sixth Commandment, and when Benjamin, as usual, said that he refused to meddle in such matters, she fetched Muriel. Muriel read the Commandment for her. It ran: “No animal shall kill any othe r animal WITHOUT CAUSE.” Somehow or other, the last two words had slipped out of the animals’ memory. But they saw now that the Commandment had not been violated; for clearly there was good reason for killing the traitors who had leagued themselves with Snowball.

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