If you are not a writer, it makes no difference. I thoroughly recommend that you click on the link and read the whole piece on John Daulton's blog, here: What is a REAL Author Anyway?
What is a REAL Author Anyway? The Difference Between Perdurance and Endurance
Perdurance is a word I first heard in a metaphysics class. It’s also a word I am dedicating to my friend. And to all my fellow writer friends out there, whether I’ve met them or not. Perdurance is what I think my friend, and anyone else out there, needs to understand to find joy in their work, their art and their career. And since I know it’s not a commonly used word, or even a definitively defined one, I’ll explain it as best I can.