Unmake is indeed a word. It is a verb meaning to reverse, or undo the making of. Synonyms include to ruin or destroy.
The use of these words, unmake and sensible, together is uncommon. A better phrase to use would be: "to confuse," "to ignore," or to "be unreasonable, 'depending on the usage.
The protagonist is the guy trying to complete a task or quest. the antagonist is the guy/girl trying to stop him from achieving what he wants to do. hope fully this helps. Cheers from Canada.
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To me, when I see this quote, I think that it refers to the lack of stress put on you when you rest. While you are awake you are faced with real world problems. But when you fall asleep you are able to dream and feel like a kid again.
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