6.5.1 "Food, when eaten, becomes divided into three parts. That which is its coarsest constituent becomes the feces; that which is medium, the flesh; that which is finest, the mind.

6.5.2 Water, when drunk, becomes divided into three parts. That which is its coarsest constituent becomes the urine; that which is medium, the blood; that which is finest, the breath.

6.5.3 Heat, when taken in, becomes divided into three parts. That which is its coarsest constituent becomes bone; that which is medium, the marrow; that which is finest, the voice.

6.5.4 For, my dear, the mind consists of food; the breath consists of water; the voice consists of heat."

"Do you, Sir, cause me to understand even more."

"So be it, my dear," said he.