Theatrical art begins as the holding up to Nature of a distorting mirror. In this phase it pleases people who are childish enough to believe that they can see what they look like and what they are when they look at a true mirror. Naturally they think that a true mirror can teach them nothing. Only by giving them back some monstrous image can the mirror amuse them or terrify them. It is not until they grow up to the point at which they learn that they know very little about themselves, and that they do not see themselves in a true mirror as other people see them, that they become consumed with curiosity as to what they really are like, and begin to demand that the stage shall be a mirror of such accuracy and intensity of illumination that they shall be able to get glimpses of their real selves in it, and also learn a little how they appear to other people.