Are there still further traits in common? I find none, and see only differences everywhere, differences indeed in the apparent length as well as the definiteness of the activities, participation of effects, durability, etc. All this really is not what we might expect of a compulsion-driven, irresistible, convulsive defense against a stimulus. As concerns the dimensions of dreams, there are very short ones which contain only one picture or a few, one thought--yes, even one word only--, others which are uncommonly rich in content, seem to dramatize whole novels and to last very long. There are dreams which are as plain as an experience itself, so plain that we do not recognize them as dreams for a long time after waking; others which are indescribably weak, shadowy and vague; indeed in one and the same dream, the overemphasized and the scarcely comprehensible, indefinite parts may alternate with each other. Dreams may be quite meaningful or at least coherent, yes, even witty, fantastically beautiful. Others, again, are confused, as if feeble-minded, absurd, often actually mad. There are dreams which leave us quite cold, others in which all the effects come to expression--pain deep enough for tears, fear strong enough to waken us, astonishment, delight, etc. Dreams are generally quickly forgotten upon waking, or they may hold over a day to such an extent as to be faintly and incompletely remembered in the evening. Others, for example, the dreams of childhood, are so well preserved that they stay in the memory thirty years later, like fresh experiences. Dreams, like individuals, may appear a single time, and never again, or they may repeat themselves unchanged in the same person, or with small variations. In short, this nightly psychic activity can avail itself of an enormous repertoire, can indeed compass everything which the psychic accomplishes by day, but yet the two are not the same. One might try to give an account of this many-sidedness of the dream by assuming that it corresponds to different intermediate stages between sleeping and waking, different degrees of incomplete sleep. Yes, but in that case as the psyche nears the waking state, the conviction that it is a dream ought to increase along with the value, content and distinctiveness of the dream product, and it would not happen that immediately beside a distinct and sensible dream fragment a senseless and indistinct one would occur, to be followed again by a goodly piece of work. Surely the psyche could not change its degree of somnolence so quickly. This explanation thus avails us nothing; at any rate, it cannot be accepted offhand.