Chapter 11 is all about emotions and what causes them. It's almost impossible for someone to count the number of emotions they feel in a typical day. If you try to decide what you're feeling right now, there's a good chance you're feeling a combination of emotions.
Although this is just a cartoon, it shows that at any given time, there are so many emotions you could be feeling. The book states that there are only a small number of "primary" emotions, which all the others are a form of. It's interesting to read about why we have emotions and how they work. The book describes a baby smiling during a dream, which indicates its not always a conscious decision. To counteract that, the book also talks about how society dictates the emotions we feel, and when it is acceptable to express emotion. It's interesting to read through the chapter and see how many things pertain to your own experiences.