The most ordinary events astonish only those who think about them. What can be more natural than two people talking? They are from the same country, they speak the same language, they understand one another. They have things to say to each other and they say them. Anyone who would try to question such evident truisms would be seen as attempting to be a spinner of paradoxes. And yet…

First of all is it as natural as it appears that two people should stop and speak? To an impartial observer of the behavior of one's peers this would not seem to be the case. Most of the people we rub elbows with daily—in the street, in the subway, on a beach, in a hotel or even in the apartment building where we have lived for ten years—are people whom we do not accost and to whom we never speak. In order for people to speak to one another, certain circumstances must exist; there must be a ritual of introduction and a mutual consent that often occurs only after a certain resistance has been overcome. There are important differences to be observed in this respect among different peoples and, within the same nation, among people of different classes. But in every case dialogue is preceded by a preparatory phase of prudent observation, reserve and mistrust during which the partners size one another up and seek to situate themselves in relation to each other.