I am in the middle of this now. It is enlightening and inspiring in how it has balanced my world-view into a much higher time-frame.

My first impression was that it was a bit voodoo-ish in the way of arbitrarily assigning classifications to times in history, but it builds into a pretty cohesive and useful interpretation of history. This all leads up and sets the stage for the context of our current crisis era.

It has made me more positive and stoic towards the world's current struggles, regardless of what their outcomes may prove to be.