So, this principle that the mind's stored images return in a chaotic pattern upon going to sleep applies not only to the complete thoughts and images which one envisions, but also to the building blocks of thoughts themselves, i.e. the words and even the letters which constitute those same thoughts. Which means to say that because the human brain thinks in patterns of words and letters, and the thoughts which one experiences are composed of words and letters, these same letters can be orchestrated and integrated with the thoughts and letters of other, non related experiences, and return upon us during sleep in a jumbled manner and pattern. The thoughts are the same, which is logical since these are the very same thoughts which one pondered throughout the course of the day. It is only that these same thoughts, and their component words and letters, now return in an anarchic and chaotic manner without the individual and original thoughts distinguishable from one another. Based on this explanation of the Mitler Rebbe, we may note a fundamental difference between dreams and the ordinary, mental processes of waking life.
Dreams are mental patterns formed by vivid, often breathtaking images.
It can be appreciated, therefore, that upon going to sleep, the mind begins to transform its verbal thoughts into mental visions. Verbal messages must be translated into visual effects. As just mentioned, while asleep, the letters and words which comprise a single thought may become integrated with the logical and coherent assemblage of letters in other thoughts as well. This leads to a combination of words and ideas which may have no real equivalent in the waking world. Consequently, these verbal thoughts, when transposed to form images and pictures, assume the form which their verbal equivalent dictates.