The bottom line is that the human body is complex and subtle and oversimplifying - as common sense sometimes impels us to do - can be hazardous to your health.
Happiness that grand mistress of the ceremonies in the dance of life impels us through all its mazes and meanderings but leads none of us by the same route.
As I go to sleep I remember what my father said-that one can never be sure if one will awake. The way my health is now this is becoming more and more real.