On the Origin of Species by Means of Natural Selection

In one of the most important and revolutionary books ever written, Darwin sets out his theory of evolution by natural selection—the idea that species change over time as individuals with advantageous traits survive and reproduce, gradually transforming life itself. Drawing on decades of observation of plants, animals, fossils, and breeding, he builds his argument with patient, overwhelming evidence and cautious brilliance. On the Origin of Species overturned humanity’s understanding of the natural world and our place within it, laying the foundation of modern biology and igniting debates that continue today. Clear, meticulous, and profoundly influential, it stands among the handful of books that permanently changed how we see reality.