A paradox contradicts itself so therefore it would have to be “Well, one must be serious about something, if one wants to have any amusement in life.”
I think a simile would make the most sense. A simile is where you compare one thing to another using the words "like" or "as". In this case, the author is comparing a sentinel's tread to the watchful night wind.
What poem is this exactly. Peaches could be a symbol related to the theme
C witch is dynamic ur welcome