In this insightful 1927 work, Gustave Le Bon analyzes the profound transformations shaping the modern world. He dissects the political, social, and psychological forces at play during the interwar period. Le Bon scrutinizes prevailing ideologies and popular beliefs, contrasting widely held 'illusions' with what he perceives as the underlying 'realities' driving global events. This book offers a critical perspective on the state of civilization, the balance of power, and the future trajectory of Western societies, exploring the illusions that guide nations and the truths that determine their destinies.