By studying anatomy one will find that the organs of the senses are all capacities according to their construction; and when that capacity is clogged, broken, or in any way troubled, then that organ of sense does not function properly. The tubes and veins of the body are capacities for the blood to circulate in, and when this capacity becomes stopped up, however strong the body may be life cannot circulate and congestion and illness come. Again, every blood-cell is a capacity. If it keeps itself open life comes into it and the person feels healthy, but when a blood-cell loses this capacity life does not function any more in it and all kinds of diseases develop. So with the pores of the skin: each pore is a capacity; and when for some reason or other this capacity is clogged, then the life cannot circulate there; it stops and diseases become manifest. The digestive organs, the lungs, are all capacities which breathe life in and function according to the life that is breathed in, that is radiated through them; and when they do not function properly illness and disorder follow.