All that has been said as to the effect of good wishes and friendly thoughts is also true in the opposite direction of evil wishes and angry thoughts; and considering the amount of envy, hatred, malice and all uncharitableness that exists in the world, it will be readily understood that among the artificial elementals many terrible creatures are to be seen. A man whose thoughts or desires are spiteful, brutal, sensual, avaricious, moves through the world carrying with him everywhere a pestiferous atmosphere of his own, peopled with the loathsome beings he has created to be his companions, and thus is not only in sadly evil case himself, but is a dangerous nuisance to his fellow-men, subjecting all who have the misfortune to come into contact with him to the risk of moral contagion from the influence of the abominations with which he chooses to surround himself. A feeling of envious or jealous hatred towards another person will send an evil elemental to hover over him and seek for a weak point through which it can operate; and if the feeling be a persistent one, such a creature may be continually nourished by it and thereby enabled to protract its undesirable activity for a very long period. It can, however, produce no effect upon the person towards whom it is directed unless he has himself some tendency which it can foster--some fulcrum for its lever, as it were; from the aura of a man of pure thought and good life all such influences at once rebound, finding nothing upon which they can fasten, and in that case, by a very curious law, they react in all their force upon their original creator. In him by the hypothesis they find a very congenial sphere of action, and thus the Karma of his evil wish works itself out at once by means of the very entity which he himself has called into existence. It occasionally happens, however, that an artificial elemental of this description is for various reasons unable to expend its force either upon its object or its creator, and in such cases it becomes a kind of wandering demon, readily attracted by any person who indulges feelings similar to that which gave it birth, and equally prepared either to stimulate such feelings in him for the sake of the strength it may gain from them, or to pour out its store of evil influence upon him through any opening which he may offer it. If it is sufficiently powerful to seize upon and inhabit some passing shell it frequently does so, as the possession of such a temporary home enables it to husband its dreadful resources more carefully. In this form it may manifest through a medium, and by masquerading as some well-known friend may sometimes obtain an influence over people upon whom it would otherwise have little hold.