The erotic force is one of the most potent forces in existence and has tremendous momentum and impact. It is supposed to serve as the bridge between sex and love, yet it rarely does. In a spiritually highly developed person, the erotic force carries the entity from the erotic experience, which in itself is of short duration, into the permanent state of pure love. However, even the strong momentum of the erotic force carries the soul just so far and no farther. It is bound to dissolve if the personality does not learn to love, by cultivating all the qualities and requirements necessary for true love. Only when love has been learned does the spark of the erotic force remain alive. By itself, without love, the erotic force burns itself out. This of course is the trouble with marriage. Since most people are incapable of pure love, they are also incapable of attaining ideal marriage.