It is, however, not only so that the mind adorns itself with a certain form in order to tell you that you are going to have a good or a bad experience. There also is the natural outcome of things, there is action and reaction: what we take from the outer world is prepared in the mind, and it reacts again in another form. This gives us a sort of key by which we can understand what the next step will be. In that form the dream is a warning.