A) because he says his lover is lovely like summer(Shall I compare the to a summer’s day?), but that summer ends( And summer’s lease hath all too short a date) the he says the loveliness will live on forever (But thy eternal summer shall not fade) because he wrote about it (When in eternal lines to time thou grow’st- So long lives this, and gives life to thee.)
Both characters are motivated by the desire to construct the windmill. Boxer is motivated by his commitment to Napoleon's ideas. Boxer is motivated by his own strong work ethic