William Seager is Professor of Philosophy at the University of Toronto Scarborough. He works primarily in the philosophy of mind and consciousness studies; his most recent book is Theories of Consciousness (2nd edition; Routledge, 2016).

Preface 1. Introduction: A Panpsychist Manifesto Part I: Historical Reflections 2. Plato and Panpsychism 3. Abhidharma Panprotopsychist Metaphysics of Consciousness 4. Spinoza's Panpsychism 5. Many-Minded Leibniz's Many Minds 6. Panpsychism in the 19th Century 7. William James, Pure Experience, and Panpsychism 8. Overcoming the Cartesian Legacy: Whitehead's Revisionary Metaphysics 9. Russell's Neutral Monism and Panpsychism 10. Panpsychism Reconsidered: A Historical and Philosophical Overview Part II: Forms of Panpsychism 11. Beyond Cosmopsychism and the Great I Am: How the World might be Grounded in Universal 'Advaitic' Consciousness 12. Living Cosmos Panpsychism 13. Cosmopsychism, Micropsychism and the Grounding Relation 14. The Crux of Subjectivity: The Subjective Dimension of Consciousness and its Role in Panpsychism 15. Anomalous Dualism: A New Approach to the Mind-Body Problem Part III: Comparative Alternatives 16. Subjective Physicalism and Panpsychism 17. Panpsychism: A Cognitive Pluralist Perspective 18. Neutral Monism Reborn: Breaking the Gridlock Between Emergence and Inherence 19. Panpsychism and Non-standard Materialism: Some Comparative Remarks 20. Panpsychism and Russellian Monism Part IV: How Does Panpsychism Work? 21. Can We Sum Subjects? Evaluating Panpsychism's Hard Problem 22. Panpsychism Versus Pantheism, Polytheism, and Cosmopsychism 23. The Argument for Panpsychism from Experience of Causation 24. A Quantum Cure for Panphobia 25. Panpsychism's Combination Problem is a Problem for Everyone 26. What Does "Physical" Mean? A Prolegomenon to Physicalist Panpsychism 27. Strawson on Panpsychism 28. Idealism and the Mind-Body Problem