Management Mysterium follows two earlier works, The Triumph of Classical Management Over Lean Management and Irrational Institutions, which examine the question of why most leaders resist or reject Lean management and other forms of progressive personal and organizational change. The former provides a comprehensive materialist analysis while the latter describes the dynamic interplay between rational and irrational thinking and the role of aesthetic judgments in informing management thinking and decision-making.Management Mysterium adds to this insightful body of work by examining invisible aspects of leadership and management practice: the intangible spiritual, sacred, and the sometimes mysterious and mythical aspects of leading and managing organizations. Readers will learn how and why secular spirituality exists, how it functions, and what it achieves in both classical management and Lean management.The trilogy of books meticulously exposes the material and spiritual forces that guide leaders’ thinking which results in maintaining the status quo and continued adherence to archaic classical management.