And also he is one of the earlist scholars to advocate professionalization and objectivity and interpretive report of journalism, and one of the pioneers of public relation practice and theory.

• 李普曼是美国公共关系理论与实践的先驱之一,是美国较早倡导、呼吁新闻事业专业化/职业化和新闻客观性的人士之一,他也是较早提倡新闻解释性报道的人士之一。