James Henry Leuba was an early contributor to the psychology of religion. He explored the phenomena of belief and religious experience from a naturalist perspective. His work laid the groundwork for later scientific study of religion. Leuba sought to understand religious conviction as a natural product of the human psyche.
The book is a facsimile reprint of a scarce antiquarian work, preserving its historical significance despite potential imperfections like marks and flawed pages. It aims to protect and promote cultural literature by offering an affordable, high-quality edition that remains true to the original.