"Boys are impulsive. They become mad and they yell. When they are frightened they lash out and they run. When they are sad or their feelings are hurt, they run to a corner and sulk. Grown men don't (or shouldn't) do these things. A man is fully mature when he is able to acknowledge a multitude of intense emotions and then make a decision about how to react to them (if he needs to react to them at all). Sometimes a man will desperately want to yell back, but he doesn't. He has learned self-control, to separate his feelings from his actions."