What best describes a universal theme?

[Summarized and paraphrased from the 1st paragraph of the Wikipedia link below.] Any literary writing contains one or more themes; they are the basic concepts that are often implied in the writing and not necessarily spelled out. They are ideas, messages or morals of a story. Sometimes these ideas are very culturally bound, meaning that they will have relevance only to a segment of the world population. Other times the themes are acknowledged by people everywhere as having some deep or central relevance to everyone. They might have to do with life in general, human nature, faith, courage, basic life transitions, love, loss, and any number of other things.