This is a quote from the book "Animal Farm" by George Orwell
...ts by heart. After much thought Snowball declared that the Seven Commandments could in effect be reduced to a single maxim, namely: “Four legs good, two legs bad.” This, he said, contained the essenti al principle of Animalism. Whoever had thoroughly grasped it would be safe from human influences. The birds at first objected, since it seemed to them that they also had two legs, but Snowball proved to them that this was not so.

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