Lecture One
A deeply sad experience has the effect of literally hardening our metabolism, even though these processes are delicate. Indeed, if you happen to be unhappy, sad, or depressed, you are working against your digestion. The experience is identical to the feeling one has when food lies like a lump in the stomach, a crudely material but qualitatively comparable phenomenon. In a healthy digestion, the food passes naturally from the stomach to the intestine, is absorbed by the villi, passes into the blood, then penetrates the diaphragm, so that it can be distributed in the upper organism. This physical process is, qualitatively understood, identical to the effect of laughing, when we artificially induce the vibrations of the diaphragm. Laughing is a process that makes us organically healthy; its effect is similar to that of a healthy undisturbed digestion.