Instincts of the Herd in Peace and War

First published as two essays in the early 1900s, this work revisits those ideas with a decade of further reflection, placing them against the backdrop of a world at war. The author argues that psychology, when tied to biology, can move beyond abstract theory to become a practical tool for understanding collective human behavior. By examining the instincts that drive groups in both peace and conflict, the book seeks to illuminate why societies act as they do when under pressure.

Central to the discussion is the concept of national morale: how the emotional climate of a population can amplify or undermine military effort. The writer distinguishes the immediate tactical impact of governmental actions from their longer‑term moral influence, proposing that the latter, though often overlooked, can be analyzed and even forecasted. Though speculative, the analysis invites readers to consider how the psychology of the herd might shape policy, leadership, and the resilience of a nation facing existential danger.