One doesn't want to get too eschatological, too misty, but if one day we're called to justify humanity's presence on this planet and we're called upon to list our accomplishments as a species to try to offset the carnage, war, brutality and destruction that accompanied us throughout human history, man-made trauma for legacies & legacies that surving generations continue to bear witness to, we'll make a list where, quite simply, together with Greek tragedy & the Sistine Chapel & King Lear & the Declaration of the Rights of Man and of the Citizen & Beethoven's symphonies and "Ladri di Biciclette", we'll also mention "Winterreise" sung by Dietrich Fischer-Dieskau.
In the meantime, one can only be thankful for having had the privilege to hear Fischer-Dieskau's voice.