Answer: He would create a utopia of social and economic.equality
These lines say that the speaker is never going to give up on pursuing his beloved, however hard she rejects him. However, he doesn't seem to despair because of it. He almost thinks it is the world's natural order: while some were meant to love and pursue, others were meant to hate and reject. For him, each failure is only an impetus to keep trying. The fate's role in this situation is seen through expressions "while I am I, and you are you", and "must" - as if he can't help it but pursue her.
Answer:
"Upon its head . . . sat the hideous beast . . . I had walled the monster up within the tomb!"
Well a mainland is already mapped out with a designated trail and more chance of being rescued if something goes south. Also, obstacles can be the environment that is close to impossible to traverse without gear, and wildlife.
