But what is meant by health? This we must try to understand. Ordinarily, if we ask a physician what the definition of health is, he will only say that health is the absence of sickness. But this is a negative definition. It is unfortunate that we must define health in terms of illness. Health is a positive thing, a positive state; illness is negative. Health is our nature; illness is an attack on nature. So it is very strange that we must define health in terms of illness. To define the host in terms of the guest is very strange.
Health coexists with us; illness comes occasionally.
Health accompanies us at birth; illness is a superficial phenomenon. But if we ask a physician to define health, he can only say that health is present when illness is absent.
Paracelsus used to say that this interpretation is wrong -- the concept of health needs to be positively defined. But how can we reach a positive definition, an interpretation of the concept of health that will be creative?
Paracelsus used to say: "Until the state of your inner harmony is known, you can at best only be released from your illness -- because your inner harmony is the source of your health. But when you are released from one illness you will immediately get another, because nothing has been done about your inner harmony. Your inner harmony has to be supported."
(Excerpted from http://www.oshoworld.com/osho_talk/talks/hidden05.asp )