Perhaps the psychologists of the book will find fault with my way of using the phrase, disassociation of personality. I know their use of it, yet am compelled to use it in my own way in default of a better phrase . I take shelter behind the inadequacy of the English language. And now to the explanation of my use, or misuse, of the phrase.
It was not till I was a young man, at college, that I got any clew to the significance of my dreams, and to the cause of them. Up to that time they had been meaningless and without apparent causation. But at college I discovered evolution and psychology, and learned the explanation of various strange mental states and experiences. For instance, there was the falling-through-space dream the commonest dream experience, one practically known, by firsthand experience, to all men.
This, my professor told me, was a racial memory. It dated back to our remote ancestors who lived in trees. With them, being tree-dwellers, the liability of falling was an ever-present menace. Many lost their lives that way; all of them experienced terrible falls, saving themselves by clutching branches as they fell toward the ground.
Now a terrible fall, averted in such fashion, was productive of shock. Such shock was productive of molecular changes in the cerebral cells. These molecular changes were transmitted to the cerebral cells of progeny, became, in short, racial memories. Thus, when you and I, asleep or dozing off to sleep, fall through space and awake to sickening consciousness just before we strike, we are merely remembering what happened to our arboreal ancestors, and which has been stamped by cerebral changes into the heredity of the race.
There is nothing strange in this, any more than there is anything strange in an instinct. An instinct is merely a habit that is stamped into the stuff of our heredity, that is all. It will be noted, in passing , that in this falling dream which is so familiar to you and me and all of us, we never strike bottom. To strike bottom would be destruction. Those of our arboreal ancestors who struck bottom died forthwith. True, the shock of their fall was communicated to the cerebral cells, but they died immediately, before they could have progeny. You and I are descended
from those that did not strike bottom; that is why you and I, in our dreams, never strike bottom.
And now we come to disassociation of personality. We never have this sense of falling when we are wide awake. Our wake-a-day personality has no experience of it. Then and here the argument is irresistible it must be another and distinct personality that falls when we are asleep, and that has had experience of such falling that has, in short, a memory of past-day race experiences, just as our wake-a-day personality has a memory of our wake-a-day experiences.
It was at this stage in my reasoning that I began to see the light. And quickly the light burst upon me with dazzling brightness, illuminating and explaining all that had been weird and uncanny and unnaturally impossible in my dream experiences. In my sleep it was not my wake-a-day personality that took charge of me; it was another and distinct personality, possessing a new and totally different fund of experiences, and, to the point of my dreaming, possessing memories of those totally different experiences.
What was this personality? When had it itself lived a wake-a-day life on this planet in order to collect this fund of strange experiences? These were questions that my dreams themselves answered. He lived in the long ago, when the world was young, in that period that we call the Mid-Pleistocene . He fell from the trees but did not strike bottom. He gibbered with fear at the roaring of the lions. He was pursued by beasts of prey, struck at by deadly snakes. He chattered with his kind in council, and he received rough usage at the hands of the Fire People in the day that he fled before them.
But, I hear you objecting, why is it that these racial memories are not ours as well, seeing that we have a vague other-personality that falls through space while we sleep?
And I may answer with another question. Why is a two-headed calf? And my own answer to this is that it is a freak. And so I answer your question. I have this other-personality and these complete racial memories because I am a freak.
But let me be more explicit.
The commonest race memory we have is the falling-through-space dream. This other-personality is very vague. About the only memory it has is that of falling. But many of us have sharper, more distinct other-personalities. Many of us have the flying dream, the pursuing-monster dream, color dreams, suffocation dreams, and the reptile and vermin dreams. In short, while this other-personality is vestigial in all of us, in some of us it is almost obliterated, while in others of us it is more pronounced. Some of us have stronger and completer race memories than others.