"A man should never be ashamed to own he has been in the wrong, which is but saying... that he is wiser today than he was yesterday."
~Alexander Pope ~
We must be careful how we think about people, because more often than not, our thinking does not accurately reflect reality. We put our own stuff onto others and convince ourselves that it's them and not us. But it's always us, and our mis-perceptions are broad and vast.
We think we know about other people, but we know far less than we think.