The present work may appear to some of its readers to have been written in a sectarian spirit, with a purpose to magnify the excellences of Unitarianism, and to ignore its limitations. Such has not been the purpose I have kept before me; but, rather, my aim has been to present the facts candidly and justly, and to treat of them from the standpoint of a student of the religious evolution of mankind. Unitarianism in this country presents an attempt to bring religion into harmony with philosophy and science, and to reconcile Christianity with the modern spirit. Its effort in this direction is one that deserves careful consideration, especially in view of the unity and harmony it has developed in the body of believers who accept its teachings. The Unitarian body is a small one, but it has a history of great significance with reference to the future development of Christianity. The names of those who accept Unitarianism have not been given in this book in any boastful spirit. A faith that is often spoken against may justify itself by what it has accomplished, and its best fruits are the men and women who have lived in the spirit of its teachings. In presenting the names of those who are not in any way identified with Unitarian churches, the purpose has been to suggest the wide and inclusive character of the Unitarian movement, and to indicate that it is not represented merely by a body of churches, but that it is an individual way of looking at the facts of life and its problems. In writing the following pages, I have had constantly in mind those who have not been educated as Unitarians, and who have come into this inheritance through struggle and search. Not having been to the manner born myself, I have sought to provide such persons with the kind of information that would have been helpful to me in my endeavors to know the Unitarian life and temper. Something of what appears in these pages is due to this desire to help those who wish to know concretely what Unitarianism is, and what it has said and done to justify its existence. This will account for the manner of treatment and for some of the topics selected.