A person should not eat until his stomach is full. Rather, he should eat until he has consumed approximately three quarters of his fill.
The physician should not treat the disease but the patient who is suffering from it.
No disease that can be treated by diet should be treated with any other means.
As long as a person exercises, exerts himself greatly, does not eat to the point of being overly full, and keeps his bowels soft, illness will not come upon him and his strength will increase.
Above all, do not lose your desire to walk. Every day I walk myself into a state of well-being and walk away from every illness. I have walked myself into my best thoughts, and I know of no thought so burdensome that one cannot walk away from it.
If we could give every individual the right amount of nourishment and exercise, not too little and not too much, we would have found the safest way to health.