NEW YORK — Robert De Niro walked onto Carnegie Hall’s stage Tuesday night, unannounced and to loud applause. He didn’t make any speeches, at least none of his own. After a career defined by playing gangsters, an avenging taxi driver and a paranoid prize fighter, the Oscar-winning actor recited a call for civility, as first spoken by Abraham Lincoln. “Reason, cold, calculating, unimpassioned reason, must furnish all the materials for our future support and defense,” De Niro said in an even voice,