Errol E. Harris (Ambleside, Cumbria, England) is John Evans Professor of Moral and Intellectual Philosophy (Emeritus) at Northwestern University, and the author of Fundamentals of Philosophy, Spinoza's Philosophy: An Outline, The Substance of Spinoza, The Foundations of Metaphysics in Science, Hypothesis and Perception, Cosmos and Anthropos: A Philosophical Interpretation of the Anthropic Cosmological Principle, Cosmos and Theos: Ethical and Theological Implications of the Anthropic Cosmological Principle, and One World or None: Prescription for Survival.