This is a quote from the book "Animal Farm" by George Orwell
...d, said Squealer, was shown in the fact that he trusted nobody, not even Frederick. Frederick had wanted to pay for the timber with something called a cheque, which, it seemed, was a piece of paper wi th a promise to pay written upon it. But Napoleon was too clever for him. He had demanded payment in real five-pound notes, which were to be handed over before the timber was removed. Already Frederic k had paid up; and the sum he had paid was just enough to buy the machinery for the windmill.

read full book block explorer