Suggestion, thought reading, and distant vision are facts which already prove the independent existence of the soul, and transport us above the physical plane of the universe without making us leave it altogether. Clairvoyance, however, has infinite varieties and a scale of different states far wider than that of the waking condition. In proportion as the scale is mounted the phenomena become rarer and more extraordinary. I will mention only the principal stages. _Retrospection_ is a vision of past events preserved in the astral light and revived by the sympathy of the seer. _Divination_, properly so called, is a problematical vision of things to come either by introspection of the thoughts of the living which contain future actions in germ, or by the occult influence of superior spirits which unfold the future in living images before the soul of the clairvoyant. In both cases they are projections of thoughts into the astral light. Finally _ecstasy_ is defined as a vision of the spiritual world, where good or evil spirits appear to the seer in human form and communicate with him. The soul seems really to be transported out of the body, which life has almost left, and which stiffens into a state of catalepsy resembling death. From what those who have been in a condition of sublime ecstasy tell us, nothing in the universe can express the beauty and splendour of these visions, or the sentiment of an ineffable fusion with the divine essence which they bring back, a very transport of light and music. The reality of these visions may be doubted. It must, nevertheless, be added that if the soul, in the average state of clairvoyance, has a correct perception of distant places and of absent ones, it is logical to admit that, in its loftiest exaltation, it may have the vision of a higher and an immaterial reality. In my opinion, it will be the task of the future to restore to the transcendent faculties of the human soul their dignity and social function, by reorganizing them under the control of science and on the basis of a religion which is truly universal, open to all truths. Then science, regenerated by real faith and the spirit of love, will, with open eyes, mount aloft to those spheres in which speculative philosophy gropes about with bandaged eyes. Yes, science will become clear-sighted and redeeming in her mission, just in proportion as the consciousness and love of humanity increase in her. Perhaps it is through “the gate of sleep and dreams,” as Homer said, that divine Psyche, banished from our civilized life and weeping in silence beneath her veil, will regain possession of her altars.