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01 - Part I. An Examination of Theism. What is God?
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02 - The Origin of the Idea of God
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03 - Have we a Religious Sense?
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04 - The Argument from Existence
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05 - The Argument from Causation
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06 - The Argument from Design
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07 - The Disharmonies of Nature
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10 - Part II. Substitutes For Atheism. A Question of Prejudice
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12 - Spencer and the Unknowable