Purity as a character trait is a very common concept in fiction. Going back to some of the earliest mythology, purity is treated as an ideal goal for everybody to strive towards. Purity is usually defined as a total lack of sin with an unrivaled dedication towards the ideals of the culture. In this sense, outside of deconstructions, purity is almost always analogous to goodness. It is often analogous to virginity as well, but not entirely bound to it. This can often go to supernatural lengths. Related: