Charles Darwin's theory of evolution was one of the most significant revolutions in the history of science. Widely debated after the publication of the Origin of Species in 1859, it continues to be controversial.  In this volume, Michael Ruse offers the definitive history of the theory of evolution through natural selection. Tracing Darwin's intellectual journey and experiences that lead him to his novel insights, Ruse explores his scientific contributions as well as their relationship to philosophical issues and religious implications, as well as being both inspiration and challenge to novelists and poets. He also shows how the Darwin's ideas continue to have contemporary relevance, as they shed light on social issues and problems, such as race, sexual orientation and the connections between Darwin's thinking to that of Sigmund Freud, and the status of women, including the possibility and desirability of social change. Written in an engaging, non-technical style, Ruse's volume serves as an ideal introduction to the ideas of one of the key figures in the history of modern science.