An artist asked the gallery owner if there had been any recent interest in his paintings which happened to be on display.

"I have good news and bad news," the gallery owner replied.  " The good news is that a gentleman inquired about your work and wondered if it would appreciate in value after your death."

"What did you say?" questioned the artist.

"When I told him it would, he bought all 15 of your paintings."

"That's wonderful!" the artist exclaimed. "What's the bad news?"

"The gentleman was your doctor...."