Once not long ago there was a forest in the deep mountains of the Karakayucan valley far away in the west. Guille was the chief of the village and guardian of the forest. Guille was a very charismatic young man, with very high idealisms on how to improve the quality of life in the village and at the same time maintaining all the secrets of the forest spirits. He was ambitious, strong-willed and each of his decisions were made for the well-being of his people. Not many people agreed with his idealisms, Threru was one of them, he believed that nothing needed changing in the village and that all of his idealisms were mere fantasy. He was a very hard worker though, and followed the code of law above all else. There were others as well such as Mikau who didn't care much about law unlike Threru but enjoyed living more in the moment and running around the village helping people to become more aware about the world around them. He liked Guille alot but she thought that he took life too seriously and should have more fun in the process. Then there was Mayu the old wise man of the village, he was the most attached to Guille and his ideals. He was a very important character in this place due to the fact that he knew all the answers to all the questions about life in general. Nobody liked him(except Guille) because he was not very nice with others and was always secluded in his library studying about the works of the mind, however, his knowledge was thus respected and his ability to turn dreams into reality.
I just made this story up but it's your homework to figure out who of the following 4 characters is who: The idealist, the artisan, the theorist and the guardian.
I've got a feeling that if authors have four characters like these in a book, their book will become popular.