There are many people who like to vaunt, but they always make mistakes when they finish some tasks. Whatever we do, we should a simple thing which modesty is a kind of virtue.
Who dominate the world are outstanding people but vaunted guys. Today many people don't agree with importance of modesty, because they think it is a performance of lacking confidence. I don't think so, I deem that it is warning ourselves not to forget to keep careful vastly. We never fear that we still have many things not to know, we just fear that we think ourselves are the best in the world.
Keeping modest is the best condition in life, we can benefit from it. On the contrary, if we always think we are the best and not give a fig, we are in danger.