"These lectures were first delivered before the Harvard chapter of the Acacia fraternity in the school-year 1911-12, except the lecture on Krause, which was first delivered before the Grand lodge of Nebraska in 1908, and was originally printed in the Proceedings of the body for that year. Afterwards all five lectures, revised and corrected, were published in successive numbers of the Builder, from January to May, 1915, from which they are now reprinted."--Pref Preston: masonry in its relation of education.--Krause: masonry in its relation to morals and law.--Oliver: Masonry in its relation to religion.--Pike: masonry in its relation to metaphysics and the problem hof reality.--A twentieth-century masonic philosophy: the relation of masonry to civilization.--Bibliography (p.[89]-92)