“There is no clear dividing line between a person’s philosophy and physiology.” William James made that statement a hundred years before modern biofeedback and fMRI could demonstrate it. In the 1920s, Swiss physician Bruno Bloch proved that he was able to cure thousands of people from all over Europe with a fancy looking, but worthless machine—proving the power of the mind to cure disease. When people recover from disease after receiving a placebo, it is not the sugar pill that cures them; it is the patient’s deep belief that it will cure them—belief is the active ingredient.