Today's Small Thought

Recently, I borrowed a book written by Mark Twain. One of the short stories called, "Murder of Connecticut", in the book was deep and interesting. It was about a man who had a visitor, who was actually his "conscience". The man expresses describes the visitor as "ugly", "small", "terrible" and a "mess". When the visitor points out how unkind and unfair he is, he gets upset and wants to kill the visitor so that he doesn't need to listen to these claims. So, the man killed the visitor. He is now happy because nobody questions him. He murdered many more people after he killed the visitor. The story ends with "So, I will always be my own boss. It's the best way, don't you agree?".
I believe that we all fight once in a while with a devil and an angel in us. Drawing a line is the key to make a balance and stay healthy, I guess.