My mother used to ask what was the most important part of the body. Through the years I would guess at what I thought was the correct answer. When I was younger, I thought sound was very important to us as humans, so I said, "My ears, mommy." She said, "No. Many people are deaf. But you keep thinking about it and I will ask you again soon." Several years passed before she asked me again. Since making my first attempt, I had contemplated the correct answer. So this time I told her, "Mommy, sight is very important to everybody, so it must be our eyes." She looked at me and told me, "You are learning fast, but the answer is not correct because there are many people who are blind."