Centuries ago, when thinkers had more depth than they do now, humans were considered to have no essence. There did not exist an essential humaness, or even an essential humanity. Humans possessed such a broad territory, such a wealth of becomings, such a range, from animal baseness to angelic nobility, that one couldn't define them. As soon as a definition was proposed the only thing you could be sure of is that somewhere someone was already changing into something not bound by that definition. And as soon as one described territory deemed completely out of bounds to humanity, humans somewhere were already working to occupy it. And because of this lack of essence humans developed souls, and the more they struggled against essence, against the norm, the deeper their souls became.