By law of periodical repetition, everything which has happened once must happen again and again -- and not capriciously, but at regular periods, and each thing in its own period, not another's and each obeying its own law.
It's a great historical joke that when the Spanish met the Aztecs, it was a blind date made in serve-you-right heaven. At the time, they were the two most unpleasant cultures in the entire world, and richly deserved each other. Still, the story of how stout Cortes blustered, bullied and bludgeoned his way to collapsing an entire empire with a handful of contagious hoodlums is astonishing.
The history of mankind interests us only as it exhibits a steady gain of truth and right, in the incessant conflict which it records between the material and the moral nature.
The student is to read history actively and not passively; to esteem his own life the text, and books the commentary. Thus compelled, the muse of history will utter oracles as never to those who do not respect themselves.