This reminds me of a story Bertrand Russell liked to tell: (Quoting from Wikipedia allegedly from Human Knowledge: Its Scope and Limits)
I once received a letter from an eminent logician, Mrs. Christine Ladd-Franklin, saying that she was a solipsist, and was surprised that there were no others. Coming from a logician and a solipsist, her surprise surprised me.
This reminds me of a story Bertrand Russell liked to tell: (Quoting from Wikipedia allegedly from Human Knowledge: Its Scope and Limits)