In this column distributed by the Elon University Writers Syndicate, Professor Rosemary examines how various leaders and society have answered the sometimes thorny question of when is the right time to retire. The column was published by the Burlington Times-News, the Greensboro News & Record, the Durham Herald-Sun and the Raleigh News & Observer. Share: Share this page on Twitter Share this page on LinkedIn Email this page to a friend Print this page By Rosemary Haskell Watching Joe Biden during the presidential candidates’ debates, and now, in his post-election appearances, I see how old he looks. He has that slightly transparent and tremulous look that goes with old age. Donald Trump, another septuagenarian, appears more robust, if less coherent, than his elected successor.