Bircher's definition states that health is "a dynamic state of well-being characterized by physical and mental potential, which meets the requirements for a life adapted to age, culture. and personal responsibility. Similar to Seneca the Younger's statement, both definitions indicate that a person's health is not measured solely by the presence of disease. Although Seneca the Younger does not categorically state that there are other health factors that need to be considered, this is what he implies when he states that it is "...very different from simple not being sick”; because this suggests that there are more components in its