Book X · Chapter 27

Constantly consider how all things such as they now are, in time past also were; and consider that they will be the same again. And place before thy eyes entire dramas and stages of the same form, whatever thou hast learned from thy experience or from older history; for example, the whole court of Hadrianus, and the whole court of Antoninus, and the whole court of Philippus, Alexander, Croesus; for all those were such dramas as we see now, only with different actors.