Most people go through life completely unaware of a small blind spot in their field of vision. Here is a web site that helps you ‘see’ it. The blind spot corresponds to the part of the retina where the optical nerve passes. (Move closer to the screen if you don’t see it.)
Similarly, the human mind is equipped with a moral blind spot. We are sometimes completely unaware of the real reasons we behave and feel the way we do. Perhaps there’s a good reason for that, even if it gets us into trouble sometimes. It’s pretty funny when you think about it.