Even though we have wide knowledge, we can learn a lesson from less educated people who don't know even alphabet. Abundant living experience is much useful than a good theory. For instance, when a child is so sick that even doctors can't deal with, an old experienced mother can heal the child with the hand of love. Therefore, God says that we should be humble and serve them, thinking others better. This is because others can do the one I cannot manage while I can many things that others can't do. Then, we should keep in mind that t the wisdom of our life is to have a humble mind. A man's pride brings him low, but a man of lowly spirit gains honor. [Prob 29:23]