Yeats believed that the cycle of history was divided into 2000-yearcycles, which he called “gyres.”
The first great era/cycle was the Classical Age (invasion of the mortal byimmortal – think Greek mythology)
Yeats believed that the Christian Era (another invasion of mortal byimmortal with birth of Christ) was coming to an end
and the one that would follow (unknown and unnamed
was heralded by the dissolution of civilization, a mark
of all major changes in human history (evidenced
by brutality and desolation of WWI.