How does President Nixon's definition of his duty change throughout this speech? He originally felt that it was to stay in office, but by the end he feels it is to resign. He originally felt that it was to resign from office, but by the end he feels it is to stay. He originally felt that it was to run for Congress, but by the end he feels it is to be president. He originally felt that it was to be president, but by the end he feels it is to run for Congress.