Write a summary of the following text. Once upon a time, there was a strange man who was highly bothered to see others' happiness. In fact, he hated the courteous and polite people around him and thus he hated a few expressions like please, thank you, don't mention it etc. It troubled him a lot when people around were smiling to use these expressions. The man considered all these expressions extravagant. So, he took a mission to invent a device that would steal these polite words. He calculated two benefits from his efforts. One, people won't use these words and thus he would be relieved of his apathy to people's polite behavior and the second one was earning money by selling the words stolen by the machine to somebody else. After a few months' hard work, he succeeded in inventing the machine he desired for a long long time. The machine started working and it gave the man complete satisfaction. People from their long practice would try to say thank you, so kind of you, my pleasure, don't mention it etc. as to appreciate others or express gratitude. But their tongue could not produce these words. The machine caught them. It resulted in a huge change in people's behaviour and attitudes. Gradually people became rough and tough, they lost their mental cool, they were blaming each other or fighting with each other. They became so selfish that they started refusing to help others without having a return for their service. The man was terribly happy with his success, but he didn't count on two little girls of special needs. They had speech difficulty and so they used to communicate using sign language. Since the machine couldn't steal gestures, these girls continued their previous practices, of being kind and polite. Soon they realised the difference between them and other people, which led them to investigate the reason. After much toil, they could discover the wicked man, who was in a hide out on the top of a hill next to the sea with his enormous machine busy in capturing people's polite words and separating them into letters. The girls found the man taking a nap when they crept up to the machine and rewind it so that people could get back to their normal behaviour. As a result, the machine exploded, scattering all the letters it had gathered into the sky. After some moments, the letters started coming down, like rain, and ended up in the sea. After that, everyone became polite and respectful to each other again. The anger and the arguments stopped, proving that good manners are very useful for keeping people together in a spirit of happiness.