From Nature Cure by M. K. Gandhi

Excerpt from forward by Morarji Desai:

The human body is a wonderful and perfect machine.  If it gets out of order it can set itself right without medicine, provided it is given a chance to adjust itself.  If we are not abstemious in our habits of food, etc. or if our mind is agitated by passion, emotion, or anxiety, the body cannot eliminate all the refuse and that part which remains uneliminated turns into toxins whose presence gives rise to symptoms which we call disease.