“Now unconscious ideas” are such “as are in consciousness without our being aware of them” (Herbart). It is interesting to notice how Kant’s statement might well be substituted for that of Myers’ of his “Subliminal.” It is difficult to understand the peculiar antagonistic attitude of certain theoretical psychologists to the theory of subconscious (coconscious) ideas in view of the history of this theory in philosophy. They seem to have forgotten their philosophy and not to have kept pace with experimental psychology. Footnote 137: See footnote on p. 149. LECTURE IX THE ORGANIZATION OF UNCONSCIOUS COMPLEXES =Everyday life.=—It will be well at this point to state in orderly fashion a few general principles governing the organization of complexes or syntheses of ideas[138] which, as we shall see, play an important part in normal and abnormal life. Although this statement will be little more than descriptive of what is common experience it will be helpful in classifying and obtaining a useful perspective of the phenomena with which we shall deal. Now, as every one knows, the elemental ideas which make up the experience of any given moment tend to become organized (i.e., synthesized and conserved) into a system or complex of ideas, linked with emotions, feelings and other innate dispositions, so that when one of the ideas belonging to the experience comes to mind the experience as a whole is recalled. We may conveniently term such a system when in a state of conservation, an _unconscious complex_[139] _or neurogram, or system of neurograms_. If we wish to use psychological terms we may speak of it as a complex or synthesis of dormant ideas. Although we may formulate this principle as the “association of ideas” the formula can have only a descriptive significance pertaining to a relation in time (and not a causal one) unless there be included an unconscious factor by which the association becomes effective in exciting one idea through another—i.e., through a linking of neural dispositions. We cannot conceive of any conscious relation between ideas that can possibly induce this effect. It must be some _unconscious dynamic relation_[140] and be explained in terms of neural dispositions. If this be so, all ideas are dynamically associated and related in a process which does not appear in consciousness and which is essential for organization into a complex. Every system of associated ideas, therefore, implies conservation through an organized unconscious complex. Complexes may be very feebly organized in that the elemental ideas are weakly conserved or weakly associated; in which case when we try to recall the original experience only a part or none of it is recalled.