Through enough emotional and physical abuse anything is possible. Although some men are not greater than others, if you are treated as the underdog long enough it is easy to begin to believe. People can only handle so much. We all have our breaking part. No matter how strong a person believes themselves to be it would not be hard to strip them of all of their self worth. We are all breakable.
No, I don't think that a man will ever forget that he is a human no matter what. We as human beings will have limits when it comes to strength and intelligence, and no matter what I don't think that we can forget that we are humans and were put here by God to dominate.