This collection investigates the intellectual foundations and psychological underpinnings of political behavior in twentieth-century Japan. Edited by Ivan Morris, the text compiles seminal essays by Masao Maruyama, a prominent political scientist who examines the structural shifts in Japanese ideology from the Meiji era through the post-war period. The work argues that traditional Japanese social hierarchies and the absence of a robust individualistic political philosophy created unique vulnerabilities to authoritarianism and ultranationalism.

Experts regard this volume as a foundational text for understanding the intellectual history of modern Japan. Scholars frequently note the academic density of the prose, which provides a rigorous analysis of the cultural factors that shaped Japanese political development.