Don’t judge a book by its cover is a proverb. We interpret this proverb, which we have heard countless times, to imply “don’t be shallow.” However, this is a problem for actual books because a strong book cover can make the difference between a reader choosing to buy a book or not. Your book’s cover plays an important role in giving the reader a general notion of what the book’s main topic is. A captivating book cover will make it quickly fly off the shelf!