Word "vital force" is very popularly used in Homeopathic books. But, what does it mean? And what facts are related to it or to what is related so much that it is used again and again in books . It is that without which neither human body is complete and neither do Homoeopathic study. Image Source - https://commons.m.wikimedia.org/wiki/File:Viral_infections_and_involved_species.png