There is no universal panacea, no single and only avenue to complete health, though the past century has heard many a treatment called the universal and only avenue by various fanatical individuals or classes. "Fast," "Take no breakfast," "Eat slowly," "Breathe deeply," "Do strengthening exercises," "Practice suggestion and develop your mind forces," all these commandments we know well. But not one of them is likely to be by itself the means of complete health for all.