I put aside all the discussions on the subject as tiresome and useless for our present aim. Indeed, they reduce themselves to these two principal propositions: for some the unconscious is a purely physiological activity, a "cerebration"; for others it is a gradual diminution of consciousness which exists without being bound to me--i.e., to the principal consciousness. Both these are full of difficulties and present almost insurmountable objections.[19] Let us take the "unconscious" as a fact and let us limit ourselves to clearing it up, relating inspiration to mental states that have been judged worthy of explaining it. 1. Hypermnesia, or exaltation of memory, in spite of what has been said about it, teaches us nothing in regard to the nature of inspiration or of invention in general. It is produced in hypnotism, mania, the excited period of "circular insanity," at the beginning of general paralysis, and especially under the form known as "the gift of tongues" in religious epidemics. We find, it is true, some observations (among others one by Regis of an illiterate newspaper vender composing pieces of poetry of his own), indicating that a heightened memory sometimes accompanies a certain tendency toward invention. But hypermnesia, pure and simple, consists of an extraordinary flood of memories totally lacking that essential mark of creation--new combinations. It even appears that in the two instances there is rather an antagonism since heightened memory comes near to the ideal law of total redintegration, which is, as we know, a hindrance to invention. They are alike only with respect to the great mass of separable materials, but where the principle of unity is wanting there can be no creation. 2. Inspiration has often been likened to the state of excitement preceding intoxication. It is a well-known fact that many inventors have sought it in wine, alcoholic liquors, toxic substances like hashish, opium, ether, etc. It is unnecessary to mention names. The abundance of ideas, the rapidity of their flow, the eccentric spurts and caprices, novel ideas, strengthening of the vital and emotional tone, that brief state of bounding fancy of which novelists have given such good descriptions, make evident to the least observing that under the influence of intoxication the imagination works to a much greater extent than ordinarily. Yet how pale that is compared to the action of the intellectual poisons above mentioned, especially hashish. The "artificial paradise" of DeQuincy, Moreau de Tours, Theophile Gautier, Baudelaire and others have made known to all an enormous expansion of the imagination launched into a giddy course without limits of time and space.