This quote brings to mind the movie "Secret Mall Apartment," which I watched last weekend:

> Art is absolutely an expression of yourself. But your art is not you. Try not to entangle your ego with your art. If someone does not like your art, that does not mean they do not like you. If they think your art is bad, that does not mean they think you are bad.

The movie is partly about an apartment built in secret in a mall as an art project, and partly about the lead artist, Michael Townsend. Townsend is generally the opposite of Marsh in that he isn't interested in money, to the point of pretty much having none.

Getting back to the quote about ego: There is a scene in the movie where Michael is having a conversation with his wife about building the apartment, and his wife is emphasizing that she's trying to set up their new home. Michael clearly had his ego entangled with his art, to the point where it caused his marriage to fail.