From: A Vision- W.B. Yeats- Published 1925
Yeats expressed that he understood that the particulars are the works of the thirteenth sphere or cycle which is in every man and called by every man his freedom.
He talks about the antithetical multiform influx preceding the verse. A gradual increase of a counter movement. Perhaps, biological invasion?
Could it be a vision of Yeats to see Saturn and Jupiter coming together in 2020?
Sarcasm or premonition?