What, then, in this action already going on is responsible for this restlessness? First let us note that "indefinite restlessness" and "dissatisfaction" are terms descriptive of what Mr. James calls "the first thing in the way of consciousness." This assumes consciousness as a factor in activity. So that our question now becomes: What is the significance of this factor of restless, dissatisfied consciousness in activity? Now, there appears no way of getting at the part which consciousness plays different from that of discovering the function of anything else. And this way is simply that of observing, as best we may, the conditions under which consciousness operates, and what it does. Here the biologist and psychologist with one voice inform us that this indefinite restlessness which marks the point of the operation of consciousness arises where, in a co-ordinated system of activities, there develop out of the continuation of the activity itself new conditions calling for a readjustment and reconstruction of the activity, if it is to go on. Consciousness then appears to be the function which makes possible the reorganization of the results of a process back into the process itself, thus constituting and preserving the continuity of activity. So interpreted, consciousness appears to be an essential element in the conception of a self-sustaining activity. This "indefinite restlessness," in which consciousness begins, marks, then, the operation of the function of reconstruction without which activity would utterly break down. Precisely because, then, the idea "as a plan" is projected and constructed in response to this restlessness must its fulfilment be relevant to it. It is when the idea as a purpose, a plan, born out of this matrix of restlessness, begins to aspire to the absolute system, and attempts to ignore or repudiate its lowly antecedents, that the difficulties concerning fulfilment begin. They are the difficulties that beset every ambition which aspires to things foreign to its inherited powers and equipment. A detailed account at this point of the construction and fulfilment of the idea as "a plan of action" would contain a consecutive reinterpretation of Mr. Royce's principal rubrics. Such an account the limits of this paper forbid. We shall have to be content with pointing out in a general way a few instances by way of illustration.