" Courage is not something you have, like a sum of money, more or less in a pouch—it cannot be lost, like money spilling out. Courage is inherent in all creatures; it is the quality that keeps them alive, because they endure. It is courage, Paksenarrion, that splits the acorn and sends the rootlet down into soil to search for sustenance. You can damage the creature, yes, and it may die of it, but as long as it lives and endures, each living part has as much courage as it can hold. "

― Elizabeth Moon , The Deed of Paksenarrion (The Deed of Paksenarrion, #1-3)