Tributes have been pouring in from myriad different sources – testimony to a life well lived – following the death of Michael Tanner, who taught philosophy at the University of Cambridge for 36 years, was a life fellow at Corpus Christi, a world-renowned expert on Wagner, and a much-loved and resonant opera critic at The Spectator. The Telegraph described Dr Tanner as “one of the most brilliant and single-minded Cambridge dons of his generation”; The Times remarked “he was even incapable of writing a dull footnote.” And the Master of Corpus Christi, Professor Christopher Kelly, said: “Michael …