Schools are not the only places where Richard Holloway finds conversation. He claims he often has to defend his outspoken views at the dinner tables of Edinburgh.
As it happens, Sam Galbraith, in his last appearance as Education Minister, also referred to dinner party certainties. Perhaps, Gordon Kirk, dean of Edinburgh University's education faculty, suggested,the two should be invited to the same parties - and it was not difficult to guess whose views he would prefer to rub off on whom.
Galbraith, in his usual curmudgeonly response, said he didn't much like dinner parties but he and the controversial bishop (there, we've said it) had at least one thing in common: "Neither of us believes in God."