I think Serling's quote is basically saying that not all violence is created with weapons. Violence and evil starts inside yourself with something as simple as a thought. The thought can then grow and unleash the monster that is inside yourself. When we think of violence everyone automatically thinks of fights or weapons. Many don't realize all the violence that can be just created with words and then into actions. I agree with this quote especially after watching the Salem Witch Trials because these girls drove the town mad with accusations without evidence they convinced the town and that was enough to cause the town mad.