The flesh is neither a material nor a spirit, but a common texture organization. When two people are together, they can form a fusion between the elements that are related to each other. But it is not just a fusion with totally same elements, it is setting a mutual absolute distinction and let them extrusion each other. The core principle of this is to emphasize the particularity of the human body. Self-identification is never fixed, they make a new definition of themselves based on the difference between who that person is and what they have been going through. All identity is ultimately relationship to something else.