You should be careful for what you wish for, because some wishes can have major consequences.
The authors wants you to feel the consequences of greed in his story "The Mokeys Paw". The author is constantly connecting the theme to the story to show his point in the story.
Thesis Statement: Using magic for your own greed is wrong. Instead it would be better to help others rather then doing everything for yourself. If you are doing things for yourself and being greedy, then later you could have nothing due to the consequences it may cause. What goes around comes around.