Is metaphysics possible? This book argues that the greatest threat to its viability derives from a self-destructive formalism. If what is essential to the nature of physical entities are the properties they have in common (as formalism holds), the inevitable result will be a reductionist collapse--leaving only "being" or physical "matter" or some other underlying ground. In Essential Difference, James Blachowicz first constructs a one-to-one historical parallel between the modern crisis surrounding formalism (Hume/Kant/Hegel) and the ancient version (Parmenides/Plato/Aristotle), focusing on...