Even though a committed nationalist, Yeats usually rejected violence as a means to secure Irish independence, and as a result had strained relations with some of the figures who eventually led the uprising.
[1] The sudden and abrupt execution of the leaders of the revolutionaries, however, was as much a shock to Yeats as it was to ordinary Irish people at the time, who did not expect the events to take such a bad turn so soon.
Yeats was working through his feelings about the revolutionary movement in this poem, and the insistent refrain that "a terrible beauty is born" turned out to be prescient, as the execution of the leaders of the Easter Rising had the opposite effect to that intended.
[2] In the second stanza, the narrator proceeds to describe in greater detail the key figures involved in the Easter uprising, alluding to them without actually listing names.
In this poem, although MacBride is alluded to as a "vainglorious lout" (32) who had "done most bitter wrong" (33) to those close to the narrator's heart, Yeats includes him in his eulogy among those who have fallen for their republican ideals: "Yet I number him in the song;/ He, too, has resigned his part/ In the casual comedy/ He, too, has been changed in turn" (36–7).
Yeats emphasises his repeated charge at the end of the stanza, that, as a result of the execution of the Easter Rising leaders, "A terrible beauty is born" (40).
Unlike the majority of images presented in this stanza, of clouds moving, seasons changing, horse-hoof sliding, which are characterized by their transience, the stone is a symbol of permanence.
The stanza returns to the image of the stony heart: "Too long a sacrifice/ Can make a stone of the heart" (57–8), Yeats wrote, putting the determined struggle of Irish republicans in the Easter Rising in the context of the long history of Irish revolts against British rule, as well as alluding to the immense psychological costs of the struggle for independence.