Charles Darwin and The Origin of Species

This monograph examines Charles Darwin's complex relationship with religious belief through careful analysis of The Origin of Species and its intellectual context. Keith traces how Darwin's theory of evolution by natural selection emerged from and ultimately challenged the natural theology tradition that dominated early nineteenth-century British science.

The study demonstrates that Darwin initially worked within William Paley's framework of design arguments, having studied Paley's Natural Theology at Cambridge. Keith shows how Darwin's early biological investigations sought evidence of divine design in nature's adaptations. However, as Darwin developed his theory of natural selection, he gradually recognized its implications for traditional design arguments. The mechanism of variation and selection could explain the appearance of design without requiring a designer, fundamentally undermining Paley's watchmaker analogy.

Keith's intellectual history reveals Darwin's cautious approach to religious questions in The Origin of Species. Despite private doubts expressed in correspondence and notebooks, Darwin strategically limited his published work's theological implications. The monograph analyzes how Darwin employed rhetorical strategies to minimize conflict with religious readers, including appeals to secondary causes and laws established by the Creator. Nevertheless, Keith argues that the logic of natural selection inevitably challenged special creation and providential design.

The work contributes significantly to understanding how evolutionary theory relates to naturalistic explanations of religion itself. Keith explores Darwin's unpublished reflections on the evolutionary origins of religious belief, showing how Darwin privately extended natural selection to explain human religious tendencies as adaptive traits. This aspect of Darwin's thought, though largely suppressed during his lifetime, prefigured later evolutionary approaches to religion.

Keith's analysis illuminates the gradual transformation of the God debate in Victorian science. By tracing Darwin's intellectual journey from natural theology to methodological naturalism, the monograph demonstrates how The Origin of Species shifted the terms of discussion about design in nature. The work shows that while Darwin avoided explicit atheism, his theory provided a naturalistic framework that made divine intervention in species creation scientifically unnecessary. This careful historical reconstruction helps explain both the revolutionary impact of Darwinian evolution on natural theology and Darwin's own complex, evolving stance on religious questions.