4. The soul in its impure state finds itself oppressed, and is once again attracted to the visible world by the fear of that which is invisible and immaterial. It is a mistake then, to say that the gloomy ghosts seen round tombs and monuments most be the soul of those who have left their bodies without being absolutely pure, and so still conserve part of their material form, which makes them visible to the human eye. In fact they are not good but bad souls, dragging with them the penalties of their first life, who find themselves forced to wander in such places, where they will continue to wander till their appetites, inherent to the material form with which they are clad, recalls them to another body. Then, beyond doubt, they will return to the some habits which were the object of their preferences during their first life.
Not only the principle of reincarnation is clearly shown here, but also the stale of those souls who maintain themselves under the yoke of matter, as described to us in spiritual communications. Furthermore, it is said that reincarnation in a material body is the consequence of the impresses of the soul, whereas the purified soul finds itself exempt from further reincarnation. This is exactly what Spiritism teaches, only adding that the soul which, having made good resolutions while in the spiritual world and possessing some acquired knowledge, brings less defects, more virtues and intuitive ideas on being reborn than it had in the preceding incarnation. In this way each existence shows both intellectual and moray progress (see HEAVEN & HELL, 2nd part, Examples).