Acknowledgements Notes on Contributors PART I: MONISM IN CONTEMPORARY METAPHYSICS Monism: The Priority of the Whole; J.Schaffer Existence Monism Trumps Priority Monism; T.Horgan & M.Potr? Why the World has Parts: Reply to Horgan and Potr?; J.Schaffer Against Monism; E.J.Lowe There Is More Than One Thing; P.Goff The World as We Know It; R.Healey On the Common Sense Argument for Monism; D.O'Conaill & T.E.Tahko Substances Stressed; J.Heil PART II: MONISM IN SPINOZA Spinoza on Composition and Priority; G.Guigon Why Spinoza Is Not an Eleatic Monist (Or Why Diversity Exists); Y.T.Melamed Spinoza's Monism and the Reality Of The Finite; S.Nadler Spinoza's Monism? What Monism?; M.Laerke Spinoza's Demonstration of Monism: A New Line of Defense; M.Kulstad Explanatory Completeness and Spinoza's Monism; R.N.Goldstein Index