10. Mediums are the interpreters of the Spirits, supplying the lack of material organs through which they may transmit their instructions. Here is the reason why they are endowed with faculties for this purpose. In these present days of social renewal, they have a very special incumbency. They are like trees who are destined to supply spiritual sustenance to their brothers and sisters. Their numbers multiply so there may be abundance of nutriment. They are everywhere, in all countries, in all social classes, amongst rich and poor, great and small, so that no place may be without them to demonstrate to mankind that all are called. However, if they turn away from the providential objective for which this precious faculty was conceded, if they employ it for futile or prejudicial things, if they put it to the service of mundane interests, if the fruits are bad instead of being good, if they refuse to utilize it for the benefit of others, if they take no benefit from it for themselves, thereby becoming better persons, then they are like the sterile fig-tree. God will take away the gift that has become useless in their hands, that seed from which they did not know how to bring forth fruit, and will allow them to fall into the hands of evil Spirits.