1743 – 1805
William Paley (1743–1805) was an English Anglican clergyman, philosopher, and natural theologian whose work Natural Theology (1802) became the defining statement of the design argument in the modern era. He argued that the complexity and purposiveness of biological organisms, like the intricate workings of a watch, imply an intelligent designer. His writings shaped British natural theology and were required reading at Cambridge for decades, directly influencing Charles Darwin.
Formulated the watchmaker analogy as a rigorous teleological argument for God's existence in Natural Theology (1802)
Provided one of the most systematic pre-Darwinian accounts of biological adaptation as evidence of divine design
Authored Evidences of Christianity (1794), a widely used defense of miracles and Christian revelation
Developed a utilitarian moral framework in Principles of Moral and Political Philosophy (1785)
His work served as the primary foil for Darwin's theory of natural selection, shaping the terms of the design debate for centuries