This 1963 book provides an invaluable glimpse into the mid-nineteenth century origins, beginning with Phineas P. Quimby, of the New Thought movement in the United States. It describes the careers of the most influential teachers and writers in the various schools and movements, with the exception of the well-known Christian Science church.

It is most successful in uncritically informing the reader of the roots of modern New-Age ideas, most of which were expressed more than a hundred years earlier. It is endlessly surprising to discover how little credit most spiritual leaders give to their ideological forbears and how, because of the lack of any coherent organization, a widespread unawareness of earlier discoveries persists.

Although the author supplies an apparently comprehensive bibliography to the grateful student, the reader wishes that the text delineated more precisely the specific differences in philosophy among the several teachings, for it is those differences that produced the individual schools and distinct spiritual communities.