The feet also are common agents of disease. The feet of those who wear boots and shoes grow dirty, and begin to exude a lot of stinking perspiration. So great is the stink that those who are sensitive to smells will hardly be able to stand by the side of one who is removing his shoes and socks. Our common names for the shoe speak of it as the "protector of the feet" and the "enemy of the thorn" showing that shoes should be worn only when we have to walk along a thorny path, or over very cold or hot ground, and that only the soles should be covered, and not the entire feet. And this purpose is served excellently well by the sandal. Some people who are accustomed to the use of shoes often suffer from headaches, or pain in the feet, or weakness of the body. Let them try the experiment of walking with bare feet, and then they will at once find out the benefit of keeping the feet bare, and free from sweat by exposure to the air.
I would specially request those who have carefully read through the book so far to read through this chapter with even greater care, and ponder well over its subject-matter. There are still several