The goal of art-making in general is communication.
As an artist, it's possible to get tired of yourself.
In terms of the class structure that you see so much in European portraiture, I don't think one feels that in America in the 21st century. But we have these other kinds of social structures now, like celebrity, who establish new hierarchies.
Failures in art usually lead to something else interesting.
In a gallery, there's an expectation of high prices and a somewhat elitist atmosphere.
Smells are so powerful and evocative, sometimes stronger than visual cues.