The character of the artist doesn't enter into the nature of the art
And, since the model he faithfully copies is not going to be hung up next to the picture, since the picture is going to be there on its own, it is of no interest whether it is an accurate copy of the model.
My work is purely autobiographical... It is about myself and my surroundings.
The task of the artist is to make the human being uncomfortable.
It is through observation and perception of atmosphere that he [the artist] can register the feeling that he wishes his painting to give out.