Imaginative intellectual creation is inseparable from the frequency of the subconscious state, and in this category of creations must be included the discovery of the scientist and the ideological construction of the philosopher. All who have invented or discovered something new in any field whatsoever, are imaginatives as well as observers. The most deliberate, the most thoughtful, the most painstaking writer is constantly, and in spite of himself, enriched by the effort of the subconscious. No work is so completely a product of the will that it does not owe some beauty or novelty to the subconscious. No sentence, perhaps, however worked over, was ever spoken or written in absolute accord with the will. The search for the right word in the vast, deep reservoir of verbal memory is itself an act which escapes so completely from the control of the will, that very often the word on its way flees at the very moment when consciousness is about to perceive and to grasp it. Everyone knows how hard it is to find, by sheer force of will, the word wanted, and also with what ease and rapidity certain writers summon up, in the heat of composition, the rarest or the most appropriate words. It is, however, imprudent to say: "Memory is always unconscious."[4] Memory is a secret pool where, unknown to us, the subconscious casts its net. But consciousness fishes there quite as readily. This pond, full of chance fish previously caught by sensation, is particularly well known to the subconscious. Consciousness is less skilful in provisioning itself from this source, though it has at its service several useful tricks, such as the logical association of ideas and the localization of images. Man acquires a different personality, according as the brain works in the darkness or by the lantern-light of consciousness; but, save in pathological cases, the second of these states is not so well defined that the first cannot intervene without interrupting the effort. It is under these conditions, and in accordance with this concert, that most works conceived, in the first instance either by the will or by the dream faculty, are completed.