Hello!
It is metaphor
This is being compared between something that is not applicable.
It is not simile because it doesn't have the words 'like' or 'as'.
Not a hyperbole since it isn't an exaggeration.
Finally, it is not a personification because it does not compare a human like feature to an inanimate object.
Hope this helps! :D
        
             
        
        
        
Thoreau mostly uses imagery to illustrate time in the excerpt. The second sentence is saying that he is in the midst of time/living, and he can "detect how shallow it is," meaning that he is aware that life is short and that the end is inevitable. Thoreau also describes time as being fleeting, but ever-present.
I hope this helps!
        
             
        
        
        
YYeah man I like hotdogs too but I like them with chili and cheese ha ha Ha anyways I hope that helps
        
             
        
        
        
Patient best shows personification.
        
             
        
        
        
<span>A word processed rsum (resume) designed to be visually appealing is a : Print rsum (resume)
-Hope this helps.</span>