Far Side Comics : Staying happy is an art, and not everyone is a master of this art. It is not defined by what you are going through in life or where you come from. Rather, it is about mastering the art of simplicity, staying positive and living in the moment.
With all due respect, it is stated there that these comic strips are only for fan entertainment. All of these comic series are the work of well-known artists.Source:TheFarSide & others