What role does universality of theme play in the value of literature?

So, this is from what I understood from the question.

Universal theme is when a theme is relatable by a wide range of readers. These are themes that many people can relate to for many reasons. For example, they can incorporate common life experiences or are simply concepts of human nature that most readers can understand. And universal themes help readers to connect to the story emotionally.

these have to be in your own words

it u understand what he thought at the time and let u know more about him then what third person would of known probably. hope this : )