I. The material category is characterized by its representation of thought

contents, i.e., of contents that are worked out in a train of thoughts (arranged thought, imagined), whether they are mere images or groups of images, concepts that are somewhat drawn out into comparisons and definition processes, or indeed judgments, trains of reasoning, which serve as analytic or synthetic operations, etc. Since, as we know, the phantasies (dreams, reveries, even poems) are mostly inspired by wishes, it will prove frequently the case that the contents symbolically contained in them are wish images, i.e., the imagined experiencing of gratification.