I'm curious as to what the word for religious philosophy that, although it may have come from a religious figure, or said in some religious context, can, and often times is, used in a secular context.
For example, the expression "Do unto others as you would have done to you." is derived from the Christian bible, but this is a fairly common ideal of many societies. I know that it's not just religious figures that have talked about that kind of concept, (for example Immanuel Kant with the Categorical Imperative), but what would be the best word or way to describe this kind of philosophy that is non-religiously contingent?
I’m looking for a word that describes a philosophy that is religiously originated, but itself doesn't require anything more than wisdom or comprehension to understand. (i.e. one doesn't need to believe in -just as an example- God, or any other such "unproven aspect").