Marsh descreve assim o seu trabalho:
"I am fascinated by [the ceramic vessel's] deep and unparalleled history and position between nature and culture. While the vessels that I make are not utilitarian nor do they specifically refer to an historical pottery type or style, I believe that I use them as a device to address the essential. On a simple level they do attempt to pay homage to what pottery from around the world has always been required to do: hold, store, preserve, offer, commemorate, and beautify. In the end, whether it might be a vase on a table, an empty coin bank, the bowl on the night stand, a burial urn or a ballot box, what could be more natural than to put something in a vessel? "