It is said that reality is stronger than any description we can make of it, and we must admit that atrocities, when we see them, go beyond any idea we may have had of them. On the other hand, when it is a question of values and beliefs, the contrary is true: reality is much less than its representation and the ideas it professes. This loss of energy is called indifference. Madame Bovary believed that in Naples happiness was as firmly rooted as the orange trees and as strong as stone. The wisdom of nations knows that that is not the case: “We hope for Paradise but as late as possible,” affirms a Christian proverb. This indifference poses a problem or an entire series of problems (Georg Simmel's work could be considered from that point of view) unless it arises from all our errors, spontaneous or scientific, concerning man and society. I do not know where I read, or dreamed, the story of a young ethnologist who went to study a tribe that was said to believe that the world would come to an end if the priests let the sacred fire go out. He assumed that the priests were as anxious as though they controlled the detonator of an atomic bomb. Admitted into the temple of the fire, he saw the peaceful religious going about routine tasks. Reality is rarely emphatic. Rites and customs, for example, reflect the beliefs of a society. Paintings and sculptures show what the society believes or serve to make it believe what it sees. Sculpture in cathedrals were the bible of the illiterate. Is that really certain? We notice that most often people perform the rites without believing in their significance and, in any case, without interest in them, because the liturgy is not a means of communication giving information. They do not look at the images. (How many Parisians have looked at the Napoleonic bas-reliefs on the Vendôme column?) and if they tried to do so, they would not be able to decipher their iconography or even see them: placed too high, the images are often undecipherable. So it is necessary to sketch out a sociology of art in which the art work, far from conveying an iconography and an ideology, is a decor that we do not even look at, that we can hardly see and that is however very important. The study of all these insufficiencies would be a vast program. Here we will confine ourselves to art.