Mary Midgley is one of the most influential moral philosophers of the twentieth century. Over the last 40 years, Midgley's writings on such central yet controversial topics as human nature, morality, science, animals, the environment, religion, and gender have shaped the landscape of contemporary philosophy. She is celebrated for the complexity, nuance, and sensibility with which she approaches some of the most challenging issues in philosophy without falling into the pitfalls of close-minded extremism. In turn, Midgley's sophisticated treatment of the interconnected and often muddled issues related to human nature has drawn interest from outside the philosophical world, stretching from scientists, artists, theologians, anthropologists, and journalists to the public more broadly. Mary Midgley: An Introduction systematically introduces readers to Midgley's collected thought on the most central and influential areas of her corpus. Through clear and lively engagement with Midgley's work, this volume offers readers accessible explanation, interpretation, and analysis of the concepts and perspectives for which she is best known, most notably her integrated understanding of human nature, her opposition to reductionism and scientism, and her influential conception of our relationship to animals and the wider world. These insights, supplemented by excerpts from original interviews with Midgley herself, provide readers of all backgrounds with an informed understanding and appreciation of Mary Midgley and the philosophical problems to which she has devoted her life's work.