The rebirth of the world would occur at this point in time. Man's soul would be perfected in death. To live rightly in phase is not to achieve any specific kind of success, but to keep the true balance of that phase without confusion. The succession of phases in both the four Faculties and the four Principles allows us to evolve naturally as Yeats believes we should. A Vision is a difficult work to fully understand.
Time is infinite in nature.
Yeats proves this through the use of the gyres. There is no apparent beginning or end to each of the interpenetrating gyres. This is probably the most difficult notion to understand. As we journey through life in the four Faculties, we see how the affects of Will, Mask, Creative Mind, and Body of Fate are interrelated. In addition, we are able to see the magnitude to which they influence our behavior.