Now available in paperback, this collection of revised, collected, and some new essays written in time for his 100th birthday by the most eminent evolutionary biologist of the past century, explores biology as an autonomous science, offers insights on the history of evolutionary thought, critiques the contributions of philosophy to the science of biology, and comments on several of the major ongoing issues in evolutionary theory. Notably, Mayr explains that Darwin's theory of evolution is actually five separate theories, each with its own history, trajectory and impact. Natural selection is a separate idea from common descent, and from geographic speciation, and so on. A number of the perennial Darwinian controversies may well have been caused by the confounding of the five separate theories into a single composite.
`In this first book of the second century of his long career, the biologist Ernst Mayr at age 100 has given us his reflections on the most interesting and important questions about life: why living things can't be understood just as very complex machines, how humans evolved, why we haven't yet communicated with any extraterrestrials, and others. Written with a clarity and vigor that shine from every page, this book is best summarized in one word: 'exciting!' Jared Diamond, Professor of Geography, UCLA, author of Guns, Germs and Steel (Pulitzer Prize, 1998)
`Ernst Mayr has long had a deep and well-informed interest in the philosophy of biology in relation to broad questions in the philosophy of science. This is an invaluable, thought-provoking, and engaging summary of his ideas, a crowning achievement!' Mary Jane West-Eberhard, Senior Scientist, Smithsonian Tropical Research Institute, author of Developmental Plasticity and Evolution (Hawkins Award, 2003)
`In his first book of the second century of his long career, the biologist Ernst Mayr at age 100 has given us his reflections on the most interesting and important questions about life: why living things can't be understood just as very complex thought-provoking, and engaging summary of his ideas, a crowning achievement!' Mary Jane West-Eberhard, Senior Scientist, Smithsonian Tropical Research Institute, author of Developmental Plasticity and Evolution.

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