“... everyone who comes into contact with a child is a teacher who incessantly describes the world to him, until the moment when the child is capable of perceiving the world as it is described. According to Don Juan, we have no memory of that portentous moment, simply because none of us could possibly have had any point of reference to compare it to anything else. From that moment on, however, the child is a member. He knows the description of the world; and his membership becomes full fledged, I suppose, when he is capable of making all the proper perceptual interpretations which, by conforming to that description, validate it ...”