Answer:
The quote is about how when we are young, we are told to savour our youth because it's fleeting. When you're young though, it can feel like forever and it's harder to see how fleeting youth truly is. I believe this was included at the start of the novel because the book later follows Connor, who is only a boy.
Answer:
In Shakespeare's Macbeth, Lady Macbeth is partly to blame for Macbeth's downfall. They both react to the predictions that Macbeth will be king in the same way, even though separated: they both instantly jump to the conclusion that killing Duncan is what will be necessary for the prediction to be fulfilled
Explanation:
You didn't provide us with the text.
Twain accomplishes his purpose chiefly through telling a story within a story, also called a "frame story".
The answer is Thanksgiving and United :)