1929. The Gifford Lectures. Contents: Escape from Peril; Philosophy's Search for the Immutable; Conflict of Authorities; The Art of Acceptance and the Art of Control; Ideas at Work; The Play of Ideas; The Seat of Intellectual Authority; The Naturalization of Intelligence; The Supremacy of Method; The Construction of Good; and The Copernican Revolution. See other titles by this author available from Kessinger Publishing.