This work investigates the core question of what constitutes the human being within the framework of Aristotelian thought. Stephen R. L. Clark, a scholar of ancient philosophy, utilizes primary Aristotelian texts to construct a comprehensive anthropology. He examines the intersection of biology, ethics, and political theory to define the unique position of humanity in the natural order. The book argues that Aristotle's observations on the soul and human function provide a coherent model for understanding human nature.

Scholars frequently cite this text as a rigorous examination of the intersection between Aristotelian biology and ethics. It is regarded as a specialized resource for those seeking to understand the philosophical foundations of human nature in classical antiquity.