When we speak of abstract it is not in relation to a category of artwork. By abstract, we mean the product of a mental process that isolates units and considers these units independent, self-contained objects. These objects are given the names of wholes, parts, integers, and fractions. Actual life experience suggests that wholes and parts as completely self-contained entities cannot exist. Natural material bodies are distinguishable from one another and their surroundings and are dynamically, not definitively, bounded.