" Plato believed in metaphorical realm of pure form.. Aristotle, his pupil, rejected this, insisting that the only reality is that which we consent. We live in the world of things, he thought and each of those things have unique properties that can be defined and categorized and acts predictably according to certain laws. "

― Will Storr , Selfie: How We Became So Self-Obsessed and What It's Doing to Us