It may indeed seem precarious to rest our test of survival on so notoriously fallible, and even at times fallacious, a thing as Memory; but one does not see that there is anything better, or that there is any alternative! The memory may not be continuously enduring and operative; but if at any future time one should be persuaded of having survived from this present life, it must, one would say, be by memory in some form or other, _of_ this present life. And it must be remarked that though memory is fitful and fallible, these epithets apply mainly to the supraliminal memory, to that superficial memory which we make use of by conscious effort, and which often fails us in the moment of need. Deep below this we dimly perceive, and daily are becoming more persuaded of, the existence of vast and permanent but latent stores, which from time to time emerge into manifestation; and more and more our psychologists are inclining to think that the supraliminal self gains its memories by tapping these stores, and that its lapses and oblivions are more due to failure in the tapping process than to any failure of the memory stores themselves. Indeed not a few psychologists are now asking whether it is not likely that _every_ psychic experience carries memory with it, and so is preserved in the great storehouse. I have already, in the last chapter, spoken of the so-called subliminal self as, among other things, a wonderful storehouse of memory; and I propose now to occupy a few pages with the more detailed consideration of the nature of that self; because, as we are discussing the question of survival, our discussion, as I have just said, ought obviously to include the under as well as the upper strata of consciousness. We cannot very well confine our meaning and our inquiry to the little brain-self only, and leave out of consideration the great self of the emotions and impulses—of genius, love, enthusiasm, and so forth.[61] No, we must include both—the more intimate, though more hidden, self, as well as the self of the façade and the front window. This hidden self is indeed an astounding thing, whose extent and complexity grows upon us as investigation proceeds. For when the term ‘subliminal’ was first used it had apparently a fairly simple connotation—as of some _one_ obscure and unexplored chamber of the mind; but now instead of a single chamber it would seem rather some vast house or palace at whose door we stand, with many chambers and corridors—some dark and underground, some spacious and well lighted and furnished, some lofty with extensive outlook and open to the sky; and the modern psychologists are puzzling themselves to find suitable names for all these new domains—which indeed they cannot satisfactorily do, seeing they know so little of their geography!