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What is Spiritism? > Chapter II—Elementary notions of Spiritism > Characteristics of Mediums > 81
81. Mediums who leave much to be desired from the moral point of view sometimes receive very good communications, which can only have come from good spirits, and it would be a mistake to be surprised by this fact; it is often in these mediums' best interest and to give them, wise advice. If they do not take advantage of it, they have only themselves to blame because they write their own condemnation. God, whose goodness is infinite, cannot refuse assistance to those who have the most need of it. The virtuous missionary who teaches good morals to criminals is acting in the same way as good spirits do with imperfect mediums.
Furthermore, when good spirits want to provide a useful, widespread teaching, they will make use of the instrument at hand; however, they will leave him or her when they find one with whom they have more affinity and who will take advantage of their lessons. When good spirits withdraw, low order ones, unconcerned about moral qualities, then have an open playing field.
The result is that morally imperfect mediums who do not mend their ways sooner or later become prey to evil spirits, who quite often lead them to their ruin and great misfortune, even while in this world. As for their faculty, as beautiful as it was and would have remained, it becomes tarnished first by being forsaken by good spirits and then by being lost altogether.
Furthermore, when good spirits want to provide a useful, widespread teaching, they will make use of the instrument at hand; however, they will leave him or her when they find one with whom they have more affinity and who will take advantage of their lessons. When good spirits withdraw, low order ones, unconcerned about moral qualities, then have an open playing field.
The result is that morally imperfect mediums who do not mend their ways sooner or later become prey to evil spirits, who quite often lead them to their ruin and great misfortune, even while in this world. As for their faculty, as beautiful as it was and would have remained, it becomes tarnished first by being forsaken by good spirits and then by being lost altogether.