I have started to doodle Rembrandt copies on the train. Quick, crude and simple ones, because otherwise his genius will drive you crazy. It is difficult to even understand how much he did for portrait painting. It is probably fair to say that he created the modern language of portraiture. I have never painted master copies in oils, and after scratching these pictures in notebooks, on work papers and napkins, it is clear I still need practice in a more modest medium.