This is the nineteenth in a series of lectures delivered at Yale University under the suspices of the Dwight Harrington Terry Foundation. These lectures are on religion in the light of science and philosophy, and in this book the author approaches the subject from the historical, social and political point of view. Descartes, Hobbes, Kant, Hegel, Roger Williams are referred to in reference to the historical point of view, and since this book is short and neaty, the reader must bring a good deal of knowledge to it in order properly to understand what the author is talking about. Those who are interested chiefly from a social and political point of view will appreciate the author's definition of freedom--freedom to serve others. Many of us have gotten off the track, he believes, because we ask for freedom to be let alone which, to the author, is a false concept. This statement will give readers something to think about also : ""A modern industrial society with a democratic government and an oligarchically controlled system of production is a house divided against itself.