Who is this old fellow? Well, he is the one writing what you have been reading here. He has been discussing Eastern and Western verse and related subjects (and sometimes not so related) online for many years. He began teaching the writing of brief verse based on the best aesthetics of the old Japanese hokku online in 1996. He looked much younger then.
The calligraphy was written for him many years ago by an elderly Korean Buddhist nun. It says “Buddha Mind.” We could also say “Buddha Heart.” What is the mind of a Buddha? With what mind do we write hokku? These are questions for a lifetime.