"I would like to somewhat dispel this impression that she [agnes Martin] was some ascetic saint of the desert. She was more complicated than that and more sophisticated than that. I'm leery of sweeping her up in this celebration of artists, these artists who are self-trained or outsider, or beyond the pale of cosmopolitan art and life, and that's their merit. I think her mental illness [schizophrenia] is liable to enforce that impulse and I think that would be a mistake. It's not who she was. It was part of her life, but it didn't define her."
January 1, 1970
https://en.wikiquote.org/wiki/Agnes_Martin