The body is the physical aspect of the human being. It consists of roughly 50 trillion cells which organize to form tissue, nerves, bones, and organs. The body expresses itself in the language of matter, atoms, particles, and molecules.
The mind is the mental/emotional aspect of the human being. The mind processes thoughts and ideas as well as feelings and emotions. The mind is consciousness, memory, and imagination.
The soul is a non-physical aspect of the human being. It is our personal and individuated expression of the divine or spirit. The soul is that part of us that longs to have meaning and seeks answers to the great questions: Who am I? Why am I here? What is my purpose? The soul is eternal and communicates in the language of creative expression such as music, art, and poetry.
The spirit is the vital force within all things. Spirit may be called God or Creator. It can also be called the Quantum field, the field, or the unmanifest. It is the indescribable organizing principle of the universe and its language is pure energy.
The mind, body, soul, and spirit are the components that, collectively, comprise and define our species. If we are sick or suffering, we must work holistically to completely heal. If we do not, we are missing the connection and in all likelihood will never reach our potential for wellness and vitality. If we do not consider the whole human being, we will most likely work to alleviate symptoms of a problem and never address the root cause.