Thoreau suggests that looking at the past is like looking at the fleeting beauty of a sunset and details such as motivations and feelings of people in the past “can be lost” causing necessary details of the events to become unclear.
Secondly, Thoreau condemns the historian to acknowledge the vial that covers many facts of the past and “to find out not what was” but to use physical evidence of “what is”. Thoreau to further his point explains the role of the historian to find where a “battle has been fought”, but not to speculate on the “hearts [that were once] beating”.
Finally, Thoreau explains that it makes sense that portions of that past are “dark”; though the “darkness” isn’t a characteristic of time passing, but rater a symptom. Thoreau clarifies that “yet no era has been wholly dark” no historian should be congratulated for shining a light that claims complete understanding, for there will never be a “full blaze of