Ontology is a central theme throughout my work because it deals with the nature of existence or being by analyzing concepts about essence, substance, time, location, space, and identity. My work addresses these ideas by building upon physical, temporal, and literal metaphors that are often used to convey ideas about a process as well as a product. For instance, each drawing is not only a finished work that represents a place, but it is also a reflection of the hand of the artist, the act of making lines. Each of these drawings involves a labor-intensive process where much time is needed for construction and development. Once the drawing is complete, it is a picture of time. That is, each drawing reveals the time it takes to make a road map and then each finished drawing actually represents that time. All along, there is a literal play on mapping. Each drawing represents a process (of mapmaking, of creating roads) and a place (a representation of existence that can be either real or imagined).

- Statement for Ontological Road Maps series, by Robert Walden (2007)