The Irish have seemed wild to the English ever since they
began trying to tame them. In the 15th and 16th centuries,
"wild Irish" was a term for those who lived outside the Pale, ruled by warring
chieftains.
Madness or wildness as a characteristic of the Irish psyche
seems also to have been a commonplace stereotype in the early
twentieth century. W. H. Auden wrote of Yeats, “Mad Ireland
hurt you into poetry” (In Memory of W. B. Yeats), and
Stephen similarly thinks of Jonathan Swift in Proteus that
“A hater of his kind ran from them to the wood of madness, his
mane foaming in the moon, his eyeballs stars. Houyhnhnm,
horsenostrilled.” Such turbulent currents in the national
psyche are a matter of detached amusement, Stephen thinks, to
the tourist Haines.