or less spiritually developed than ourselves, can exercise on our mental life. For the classical school of psychiatry, obsession is a thought, or a persistent or recurrent impulse which is unwelcome and distressing and which comes involuntarily to the mind, despite an attempt to ignore it or repress it. Psychiatrists who do not admit anything beyond matter cannot understand a hidden (spiritual) cause, but when the scientific community moves beyond its materialistic view, it will recognise in the action of the invisible world that surrounds us and in the environment in which we live, a force that acts upon physical stuff as well as upon moral things. This will be a new open way to progress and the key of a multitude of badly understood phenomena of the human psychism. Obviously the possibility of a psychosomatic anomaly is not discarded, but the Spiritist Doctrine allows us to acknowledge other sources of human misery, maintained through the moral frailty of the beings. We recognise that the use of anti-depressive chemicals establishes a chemical harmony of the brain, improving the patients mood, however, they simply act on the effects, as these medicines do not cure obsession in its intrinsic causes, only re-establish the transit of neuronal messages, correcting the neuro-chemical functioning of the central nervous system. Socrates already affirmed way back that if doctors are unsuccessful in treating most diseases, it is because they treat only the body without treating the soul. By insincerity, in our tenuous effort for inner moral reform, we prevent balanced and balancing relationships with others and with ourselves. Our entire disharmony leads to the development of vicious tuning in with other sick minds, be it discarnated or incarnated, which greatly sharpens our own inner disarrangement. In the intimacy of the home, of the family, of the Spiritist Centre or of the work environment, bitter adversaries from the past get to meet up. Invited to readjustment by the Benefactors from Beyond, they are rarely able to overcome the aversion which they feel for each other, and feed this aversion again with passion in the inner essence of themselves and the toxic rays of aversion which, when concentrated, become magnetic sharp darts, susceptible to provoke illnesses and death itself. Spiritual obsession is tuning in or exchange of similar vibes. Kardec defines obsession as a persistent action that a morally inferior Spirit exerts on an individual, presenting varied characteristics which go from a simple moral influence, without perceptible exterior signs, up to complete perturbation of the organism and of mental faculties. Obsession is the encounter of inferior forces portraying each other. The multiple facets of obsession There are cases of obsessions bursting out throughout everywhere and in all levels, be it discarnated upon incarnated or vice-versa; incarnated upon incarnated, as well as discarnated upon discarnated. Our mental world rules the life which is peculiar to us in all its dimensions; however we find ourselves still at the beginning of understanding the implications of mental force, of the meaning and coverage of the mental formations in life. The obsessors1 are skillfull and intelligent,