"Latter-day English-speaking psychologists to the contrary notwithstanding, we know in the East that souls do travel abroad; that they will speak, one to another, while our bodies sleep--while we are steeped in that mysterious period of mimic death which leads us so uncannily near their twilight zone! Some men hold that our dreams are vagaries, as a puff of air or a passing breeze; others that they are unfulfilled desires; still others that they are the impress made by another soul upon the subliminal part of us, that leaves to our active senses but imperfectly translatable hieroglyphics. Does that show you nothing?" "Well," I temporized, "I can't say it shows me much. How about you, Tommy?" "Smell a little smoke, but don't see any bright light yet. Elucidate, professor!" He sighed, giving us a look of pity, I thought. "If I call to a man, and the space is great, my voice may fail before reaching him. Yet if it hangs its vibrations on a puff of air, a passing breeze that blows in his direction, he hears me! So does the soul employ the passing breeze--by which I mean the capricious thing called dreaming--to enter our consciousness that might not otherwise be reached. The impossibility is to say which is which--that is, which is the unfulfilled desire, which is but the capricious passing breeze, and which is the message from another! If in the dark an uneducated fellow sits at a piano he might play several lovely chords, yet while they sounded well there would be no intelligence behind them. Such is the chance dream! But a master-player could produce a rhapsody, expressing to one who listened hope, love, desire, warning--everything. Such is the harmonious blending of soul and soul in sleep! And how can we tell which is which?" He paused and gazed out at the water, and I saw in his face the peculiarly wistful expression that so often accompanies thoughts which are both elusive and far away. The index finger of his right hand was slightly raised, indicating a subconscious impulse to point upward. Slowly turning back to us, he said in a tone of solemnity that lingers with me even now, a year later, as I write of it: "In the Psalms we find these merciful words: 'He giveth His beloved sleep.' Yet they are but an imperfect translation of the original, which reads: 'He giveth _to_ His beloved _in_ sleep.' Do you not see here a greater meaning? Do your minds not at once grasp the corollary?" "Then you mean," Tommy asked, "that every dream is intended to express something?" "I will not go quite that far, although there are men highly practiced in the science of psycho-analytical research who stoutly affirm it. Ah, the great difficulty is in drawing the line--in determining which dreams are but passing breezes and which are sent to us upon the wings of angels!" "You've studied those things," I ventured. "Which was mine?"