My translation to casual modern English: In just a few days of writing - a few hours of reading - six hundred years have passed, and the life or reign of a kin

My translation to casual modern English: In just a few days of writing - a few hours of reading - six hundred years have passed, and the life or reign of a king seems but an instant. Death is ever present, and the criminal who seizes the throne immediately loses it. From our remote position we look down on the rapid passing of sixty dead kings, who together barely make an impression on us. We might be surprised at their ambition for a throne that seems to bring nothing but death. But that surprise is lessened by the fact that the ambitious turn up everywhere and always. Nonetheless we might wonder why there is this constant desire to rule. ...I won't bore you with a long discussion of how miserable it is to be king, but it's clear that they are pretty miserable.