Secret of the Ages: The OriginalText

A foundational work in early twentieth-century New Thought writing, The Secret of the Ages presents Robert Collier’s sustained examination of the relationship between thought, belief, and personal development.

Drawing on historical examples, religious references, and practical reflection, Collier develops a framework in which success, achievement, and personal direction are closely tied to the disciplined use of thought. The work considers how intention, focus, and conviction influence both character and outcome, presenting these ideas within a broader philosophical context.

Rather than offering a simplified method, Collier’s approach unfolds through a series of connected discussions, each building on the idea that mental habits and inner orientation shape external experience. This edition presents the original first edition text, preserving the structure and content of Collier’s work as it was first published.

About the Author
Robert Collier (1885–1950) was an American author associated with the New Thought movement and early twentieth-century success literature. His works explore the relationship between belief, intention, mental discipline, and achievement, drawing on historical narrative, religious tradition, and practical reflection.

Best known for The Secret of the Ages, Collier wrote extensively on the application of thought to personal and material development. His writing influenced later self-improvement literature and remains part of the core New Thought tradition, continuing to be read for its clarity, scope, and sustained focus on the power of directed thought.