The character of the artist doesn't enter into the nature of the art. Eliot said that art is the escape from personality, which I think is right. We know that Velรกzquez embezzled money from the Spanish court and wanted power and so on, but you can't see this in his art.
Lucian FreudI want paint to work as flesh... my portraits to be of the people, not like them. Not having a look of the sitter, being them ... As far as I am concerned the paint is the person. I want it to work for me just as flesh does.
Lucian Freud