Material science can never understand it. The scope of science is limited because it does not go beyond the manifest world. Science deals with experiment whereas spiritualism deals with experience and inner vision. I can see matter where the best microscope can find none. Even the best doctor needs the help of an X-ray film and the result of clinical tests of blood, urine and stool to diagnose a complicated disease. But I need none; I can give you the correct diagnosis right away. (GG, p. 87)