In The Political Animal in Medieval Philosophy Juhana Toivanen investigates what medieval philosophers meant when they argued that human beings are political animals by nature. He analyses the notion of ‘political animal’ from various perspectives and shows its relevance to philosophical discussions concerning the foundations of human sociability, ethics, and politics. Medieval authors believed that social life stems from the biological and rational nature of human beings, and that collaboration with other people promotes prosperity and good life. Toivanen provides a detailed philosophical interpretation of this view across a wide range of authors, including unedited manuscript sources. As the first monograph-length study on the topic, The Political Animal sheds new light on this significant period in western political thought.