Back
William Strauss, Neil Howe: The Fourth Turning (1997, Broadway)

First came the postwar High, then the Awakening of the '60s and '70s, and now …

Review of 'The Fourth Turning' on 'Goodreads'

I remember being really impressed by this in 1998 when I originally read it but, in retrospect, it seems very pseudo-scientific. Might be worth a reread to see how it holds up.