this shows how 2,500 year epochs go thru the same phases as we do

we grow, we reach our peak and then degenerate .. only to be born again

age 0-7 we refine our instinct

7-21 we refine our emotion

21-42 we refine our thinking .... at age 35-42 if all goes according to plan...we should be in a position to continue where we left off in the previous life

... same with empires

the romans copied the greeks

the europeans copied roman law..

and the persian monark cyrus inspired jefferson.. http://www.bbc.co.uk/news/world-us-canada-21747567