Books mirror humans in a way that both carry a different story hidden inside their hearts. Every book has a different plot, different settings and different time span that affect the words written inside. As for humans, time, situations and circumstances are majorly accountable for our doings. 
Each book has a different synopsis that can give us the crux of the story yet the actual mystery cannot be solved until we read the whole work. Similarly, a man cannot be judged by his appearance. Just like books, we all have a different story. However, we never judge the books and appreciate each story alike, but we do judge humans on being different from each other. Just as we appreciate the uniqueness of a book, we should cherish the unique auras of each other.