Sometimes we become so angry that we give no thought to the possible consequences of our actions. We may give no thought to how we might hurt others or ourselves. It's only when the blanket of anger subsides and we move back into a place of reason that we realize the consequences of our actions. We might then realize that we not only hurt someone else but also hurt ourselves. I suspect for most people we cannot hurt others without hurting ourselves. I include myself when I say "we".