Santayana, George 1863-1952 Winds of Doctrine, and Platonism and the Spiritual Life

Conklin, Edwin Grant 1863-1952 A Synopsis of the General Morphology of Animals

Santayana, George 1863-1952 Scepticism and Animal Faith; Introduction to a System of Philosophy. --

Santayana, George 1863-1952 Scepticism and Animal Faith: Introduction to a System of Philosophy