A particular phenomenon occurs when the brain is congested or overcharged by Astral Light; sight is turned inward, instead of outward; night falls on the external and real world, while fantastic brilliance shines on the world of dreams; even the physical eyes experience a slight quivering and turn up inside the lids. The soul then perceives by means of images the reflection of its impressions and thoughts. This is to say that the analogy subsisting between idea and form attracts in the Astral Light a reflection representing that form, configuration being the essence of the vital light; it is the universal imagination, of which each of us appropriates a lesser or greater part according to our grade of sensibility and memory. Therein is the source of all apparitions, all extraordinary visions and all the intuitive phenomena peculiar to madness or ecstasy. The appropriation or assimilation of the light by clairvoyant sensibility is one of the greatest phenomena which can be studied by science. It may be understood in a day to come that seeing is actually speaking and that the consciousness of light is a twilight of eternal life in being. The word of God Himself, Who creates light, and is uttered by all intelligence that conceives of forms and seeks to visualise them. “Let there be light.” Light in the mode of brightness exists only for eyes which look thereon, and the soul enamoured with the pageant of universal beauty, and fixing its attention on that luminous script of the endless book which is called things manifest, seems to cry on its own part, as God at the dawn of the first day, the sublime and creative words: _Fiat lux_. We do not all see with the same eyes, and creation is not for all the same in colour and form. Our brain is a book printed within and without, and with the smallest degree of excitement, the writing becomes blurred, as occurs continually in cases of intoxication and madness. Dream then triumphs over real life and plunges reason in a sleep which knows no waking. This condition of hallucination has its degrees; all passions are intoxications; all enthusiasms are comparative and graduated manias. The lover sees only infinite perfections encompassing that object by which he is fascinated. But, unhappy infatuation of voluptuaries, to-morrow this odour of wine which allures him will become a repugnant reminiscence, causing a thousand loathings and a thousand disgusts.