W. B. Yeats in his whole life suffers from his introvert or passive self that hesitates to take action. In his agony, he creates his anti-self that boldly expresses his instinctive rage, and the anti-self is concretely established as a “fiery mask” in his poems. However, not oppressing the introvert and passive self completely, the fiery mask frequently conflicts and clashes with the passive self. Therefore, this paper explores how the fiery mask conflicts with the passive self in his “September 1913” and “Easter 1916,” and how in “Crazy Jane Talks with the Bishop,” the fiery mask overcomes such a discord represented in the two previous poems. In the first poem, the poet is indignant at political Irish nationalists who are unable to appreciate the true valuable arts. Attacking the political nationalists through the fiery mask, however the poet reveals his hidden self that hangs back from taking action. In the second poem, such hidden self under the fiery mask becomes undisguised, and the conflict between the fiery mask and the passive self is exacerbated and maximized. Such conflict is dissolved through a female mask, crazy Jane in the third poem. Usually, mad woman’s angry voice makes a strong impact on society even though she does not take a proper act from asocial responsibility of her rage such as revenge. Therefore, the fiery mask of crazy Jane makes the poet escape from his duty to take action resulting in the solution of the conflict between the fiery mask and the passive self. Ironically, Yeats’s ideal anti-self is completed in the mad female mask, crazy Jane, not in the courageous male mask.