The concepts of Nightingale's theory are the metaparadigm of nursing, that is person, health, nursing, and environment are very strongly connected to each other. Here person is a multidimensional being on which a nurse acts. Disease, as per Nightingale (1860) is a process given by nature to clean the body from impurity which has entered into the body because one or more of body's natural need is not fulfilled or one or more of the natural laws are not being applied. Disease actually indicates a want of the body in terms of natural laws, and by making some changes in environment these wants can be satisfied and disease can be cured. It is like this, Nightingale assumes that mankind can achieve perfection