Disclaimer: "I am not Ringel"

In June 1986, when I arrived to Luminy, in order to give an invited lecture about the relationship between representation theory and combinatorics (in honour of the 60th birthday of Claude Berge), I was welcomed with the statement
You are not Ringel!
and the lecture was canceled.
Claus Michael Ringel
Last modified: Tue Jun 5 11:28:28 CEST 2012