On Sunday, I met my friend. She asked me, 'If your parents and your boyfriend fell into the sea, who you would help first?' I could not make a decision because all of them were precious to me. On Monday, I went to class. Then I remembered my friend's question. I decided to set it as an exercise for my students before the lesson began. I amended the question, 'If your father and your mother fell into the sea, who would you help first? Silence. I said, 'hands up.' Still quiet. I decided to point to one of them. I looked around and I chose the girl who was sitting in the fifth row table on the left. She stood up and said, 'I don't know how to swim. Moreover, even if I did, I would not be able to carry father nor mother from the water. I weigh only 40 kilograms. I was surprised. But she was correct. She was truly the number one, outstanding student of the university. I bet not one of the students understood and perhaps you don't too.