Dreams can be divided into three classes according to their relation towards the realization of desire. Firstly come those which exhibit a non-repressed, non-concealed desire; these are dreams of the infantile type, becoming ever rarer among adults. Secondly, dreams which express in veiled form some repressed desire; these constitute by far the larger number of our dreams, and they require analysis for their understanding. Thirdly, these dreams where repression exists, but without or with but slight concealment. These dreams are invariably accompanied by a feeling of dread which brings the dream to an end