The Doctrine of Evolution: Its Basis and Its Scope

The book presents a series of eight lectures originally delivered at Columbia University, offering a clear and concise overview of the doctrine of evolution. It begins by defining the essential characteristics of living things and examines the most compelling evidence for organic change over time. The first part lays a solid foundation, guiding listeners through the natural history that underpins the theory without assuming prior scientific knowledge.

The second half turns the focus to humanity, exploring physical, mental, and social evolution as extensions of the same biological principles. It discusses how our bodies, minds, and societies have been shaped by the same forces that drive other forms of life, even reaching into ethics, religion, and philosophy. Listeners will come away with a broader appreciation of how evolutionary thought can illuminate both the natural world and the higher aspects of human experience.