As Belgian surrealist artist René Magritte would say: "Ceci n'est pas une pipe."

Resting for a second on a column in the sanctuary of Olympia, my wife Claudine snapped this shot of me most probably chewing on a twig or a toothpick — for I was one of the few French philosophy teachers in the 1960s not to smoke. Not a pipe ... not anything!

See more slides from My Grand-Père's World.