These two are aspects of one reality. Yet, there are separate laws which govern each of them. Violation of spiritual laws can affect the physical world. Violation of physical laws can affect the spiritual world. A balanced life is one that honors the laws of both of these dimensions of reality.
Human beings are spiritual as well as physical.
Human beings can always acquire new gifts, but they must struggle to do so. The timid may become courageous, the weak may become bold and strong, the insensitive may learn to care for the feelings of others and the materialistic person can acquire the capacity to look within and to listen to her inner voice. These four aspects of every person's nature are reflected in the four cardinal points of the medicine wheel. These four aspects of our being are developed through the use of our volition. It cannot be said that a person has totally learned in a whole and balanced manner unless all four dimensions of her being have been involved in the process.