"The limited number who are still working directly for us may be divided into two classes—those who retain physical bodies, and those who do not. The latter are frequently spoken of under the name of Nirmanakayas. They hold themselves suspended as it were between this world and nirvana, and They devote the whole of Their time and energy to the generation of spiritual force for the benefit of mankind... He has chosen to remain upon lower planes in order to help those who still suffer. It is quite true that to come back from the higher life into this world is like going down from the fresh air and glorious sunlight into a dark and evil-smelling dungeon; but the man who does this to help some one out of that dungeon is not miserable and wretched while there, but full of the joy of helping, notwithstanding the greatness of the contrast and the terrible feeling of bondage and compression. Indeed, a man who refused such an opportunity of giving aid when it came to him would certainly feel far more woe afterwards, in the shape of remorse. When we have once really seen the spiritual misery of the world, and the condition of those who need such help, we can never again be careless or indifferent about it, as are those who have not seen."