@ Basalisk. And I record my reply thus: 

 :::: I have been away. You are quite juvenile. You cannot even distinguish between p -> q and q -> p. The whole point is that this merely a painting of a sorrowful old man. Just because an old man is sorrowful does not imply that he he is clinically depressed whereas indeed it may be true, as I presume you mean to instruct me, that an old man who is clinically depressed is necessarily sorrowful, nevertheless the two are not equivalent. I wonder what your mentor Casliber's professional association would make of this attempt to stereotype the old and sad as clinically depressed and in need of treatment? 

 :::: I shan't notice any response you make. I have to say that if your would-be profession of choice involves the care of patients, then I can only hope that you were entirely unsuccessful in the examinations you mention.