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When I was in college I did not care about my appearance. I decided that what mattered was what was inside, and it should not matter how I look. Then my mother in very humble way addressed my physical appearance and how it does matter. This made such an impression on me that I decided to get up early the next morning so I could shower and get properly dressed for class. I noticed that I felt better about myself when I started taking more care in my appearance, and I realized that though we should not judge a book by it's cover and though our personalities and brains are still important, how we present ourselves to the world does say something about ourselves.
Talk about book's cover, I have not found any comics books that have biology, calculus or chemistry contents. If you want a calculus you need to look at a book that has cover "calculus."