So My Main Point Was

I do not remember my thesis statement word for word, but I do remember it included that Chaucer's main purpose was to show that humans may come from different social backgrounds but they can also have the same goal in mind.

Now for a more thought out version :

Chaucer's The Canterbury Tales provides insight into what was considered to be important to society during the medieval time period. It depicts a group of 29 people of various social backgrounds coming together for a common goal: to make the pilgrimage to Canterbury. In the story, Chaucer often satirizes social norms and breaks stereotypes certain professions may have while invoking others(Monk with worldly desires vs. strict Man of Law). The purpose behind the tales was to prove that despite what opinions society imposes on a person it does not define who they are, they are defined by their actions.