This is a particularly timely book, for the American public is increasingly aware of the fact that religious liberty is one of our most cherished possessions, to be jealously guarded against all encroachments. It is therefore helpful to have this brief and clear exposition of what constitutes true religious liberty and of how recently and how hardly and how imperfectly it has been achieved even in Britain and in the United States. The assault made upon religious liberty by the Nazi regime is fresh in our minds. But the review made by the author of the situation in Russia, in Italy, in Mohammedan countries and in Latin America reveals that this basic human right is far from being everywhere safeguarded. Nor can it be assumed that there are no dangers to religious liberty in this country. The author is the Secretary of the London Home Missionary Society and a well known publicist. It is a book which should appeal to all interested in the status of religion here and throughout the world.