Only the students of mind can answer the question of the origin of disease germs. Only in terms of mind can there be given a rational explanation of these minute life forms. The Adam man, the intellect, is responsible for them. This process is intricate, and it may be explained and understood in its details only by metaphysicians of the deepest mental insight. It is summed up in what is commonly called thinking.
Thoughts Produce Thoughts of health produce germs whose office it is to build up healthy organisms.
Thoughts of disease produce germs of disorder and destruction. Here we have the connecting link between materia medica and metaphysics. The physician observes the ravages of the disease germ. The metaphysician stands in the factory of mind and sees thoughts poured into visibility as germs. This opens up a field of causes unlimited in extent.