First published in 1918 and originally delivered as the Gifford Lectures in the University of Aberdeen in 1914 and 1915, this book is concerned with the relation between the true foundation of ethics and the true knowledge of God. Sorley explores the limits of morality and the problem of the divergence between the order of existence and the moral order, as well as the question of freedom and the very idea of God. This book will be of value to anyone with an interest in ethics or in the theistic grounding of morality.