The ability of an oil, or other substance, to benefit in seemingly contradictory ways, yet exerting an influence to return the body to its natural state of health. For example, lavender is known to be able to relax the body and mind and is helpful with insomnia, yet lavender is also uplifting and refreshing to a mind that is depressed and lethargic. This ability to interact with the body to assist in the most meaningful and healthful way is an indication of their intelligence and value to mankind.