The lesson that I already knew but was reinforced today is "Don't judge a book by its cover." Turns out this man is an art junkie, and spends a LOT of money in her gallery each year.
What followed was a discussion of how people discriminate against one another because of appearances or other perceived differences. It was a very nice visit with the gallery owner today, as usual.
I am reminded of an experience I had at another art gallery several months ago. I went expressly to see an exhibit of still lifes, and was barely acknowledged by the gallery attendant when I entered and when I asked a question about a painting. At the end of my visit, she was rude and dismissed me when I asked a question about the process for acquiring new artists. I felt so terrible when I left that gallery that I don't want to go back.
I just don't understand why people can't be nice.