At one time it was wrongly believed that ontogeny recapitulates phylogeny (i.e. the embryonic stages mirrors the development stages of the species). Similarly Freud thinks the phases that an individual goes through mirror the same phases that civilizations have gone through. Freud uses that theme ...
Probably more enjoyable for someone who is more familiar with freud's body of work than I am. Nonetheless, nothing objectionable about the writings of a conscientious man who appreciates Goethe and heine.