The culture conflict between Ireland and America developed his complex of Irish that permeated in the works through his lifetime, especially his late plays.

• 爱尔兰传统文化精神和当时美国主流文化的冲突形成了他的爱尔兰情结。 他的这种情结浸透在他一生的作品中，尤其是他的后期剧作。