“Practical jokes are a demonstration that the distinction between seriousness and play is not a law of nature but a social convention which can be broken, and that a man does not always require a serious motive for deceiving another.Two men, dressed as city employees, block off a busy street and start digging it up. The traffic cop, motorists and pedestrians assume that this familiar scene has a practical explanation – a water main or an electric cable is being repaired – and make no attempt to use the street. In fact, however, the two diggers are private citizens in disguise who have no business there.All practical jokes are anti-social acts, but this does not necessarily mean that all practical jokes are immoral. A moral practical joke exposes some flaw of society which is hindrance to a real community or brotherhood. That it should be possible for two private individuals to dig up a street without being stopped is a just criticism of the impersonal life of a large city where most people are strangers to each other, not brothers; in a village where all inhabitants know each other personally, the deception would be impossible.”

“All practical jokes, friendly, harmless or malevolent, involve deception, but not all deceptions are practical jokes. The two men digging up the street, for example, might have been two burglars who wished to recover some swag which they knew to be buried there. But, in that case, having found what they were looking for, they would have departed quietly and never been heard of again, whereas, if they are practical jokers, they must reveal afterwards what they have done or the joke will be lost. The practical joker must not only deceive but also, when he has succeeded, unmask and reveal the truth to his victims. The satisfaction of the practical joker is the look of astonishment on the faces of others when they learn that all the time they were convinced that they were thinking and acting on their own initiative, they were actually the puppets of another’s will. Thus, though his jokes may be harmless in themselves and extremely funny, there is something slightly sinister about every practical joker, for they betray him as someone who likes to play God behind the scenes. […] The success of a practical joker depends upon his accurate estimate of the weaknesses of others, their ignorances, their social reflexes, their unquestioned presuppositions, their obsessive desires, and even the most harmless practical joke is an expression of the joker’s contempt for those he deceives.”

“In lighthearted countries, people joked about this phenomenon, but such serious, practical countries as England, America, and Germany were deeply concerned.”

“Oh, I don't know. I prefer to think that when they're at home, the Silent Brothers are much like us. Playing practical jokes in the Silent City, making toasted cheese-""I hope they play charades," said Tessa Dryly. "It would seem to take advantage of their natural talents.”

“As his wife, Emilia must know Iago better than anybody else. She does not know, any more than the others, that he is malevolent, but she does know that her husband is addicted to practical jokes. What Shakespeare gives us in Iago is a portrait of a practical joker of a peculiarly appalling kind, and perhaps the best way of approaching the play is by a general consideration of the Practical Joker.”

“A city street equipped to handle strangers, and to make a safety asset, in itself, our of the presence of strangers, as the streets of successful city neighborhoods always do, must have three main qualities:First, there must be a clear demarcation between what is public space and what is private space. Public and private spaces cannot ooze into each other as they do typically in suburban settings or in projects.Second, there must be eyes upon the street, eyes belonging to those we might call the natural proprietors of the street. The buildings on a street equipped to handle strangers and to insure the safety of both residents and strangers, must be oriented to the street. They cannot turn their backs or blank sides on it and leave it blind.And third, the sidewalk must have users on it fairly continuously, both to add to the number of effective eyes on the street and to induce the people in buildings along the street to watch the sidewalks in sufficient numbers. Nobody enjoys sitting on a stoop or looking out a window at an empty street. Almost nobody does such a thing. Large numbers of people entertain themselves, off and on, by watching street activity.”