We find ourselves holding certain beliefs and prejudices, interested in certain things and indifferent to others, liking some foods, some colors and disliking others. Search our minds as we will, we find no clue to many of these inner trends. Why? The answer is simple. The cause is hidden below the surface. If we try to explain ourselves on the basis of the open-to-inspection part of our minds, we must come to the conclusion that we are queer creatures indeed. Only by assuming that there is more to us than we know, can we find any rational basis for the way we think and feel and act. =A Real Mind.= We learn of our internal machinery by what it does. We must infer a part of our minds which introspection does not reveal, a mind within the mind, able to work for us even while we are unaware of its existence. This inner mind is usually known as the subconscious, the mind under the level of consciousness.[16] We forget a name, but we know that it will come to us if we think about something else. Presently, out of somewhere, there flashes the word we want. Where was it in the meanwhile, and what hunted it out from among all our other memories and sent it up into consciousness? The something which did that must be capable of conserving memories, of recognizing the right one and of communicating it,--surely a real mind. [Footnote 16: Writers of the psycho-analytic school use the word "unconscious" to denote the lower layers of this region, and "fore-conscious" to denote its upper layers. Morton Prince uses the terms "unconscious" and "conscious" to denote the different strata. As there is still a good deal of confusion in the use of terms, it has seemed to us simpler to use throughout only the general term "subconscious."] One evening my collaborator fumbled unsuccessfully for the name of a certain well-known journalist and educator. It was on the tip of her tongue, but it simply would not come, not even the initial letter. In a whimsical mood she said to herself just as she went to sleep, "Little subconscious mind, you find that name to-night." In the middle of the night she awoke, saying, "Williams--Talcott Williams." The subconscious, which has charge of her memories, had been at work while she slept. The history of literature abounds in stories of under-the-surface work. The man of genius usually waits until the mood is on, until the muse speaks; then all his lifeless material is lighted by new radiance. He feels that some one outside himself is dictating. Often he merely holds the pen while the finished work pours itself out spontaneously as if from a higher source.