Spiritual Foundations Of SocietySemyon Ludvigovich Frank (1877 1950) wrote major works on epistemology, ontology, philosophy of religion, and social philosophy. As a youthful Marxist, he was arrested and banned from major Russian cities for his radical activities. Becoming dissatisfied with Marxism, he soon turned to idealism and then to religious philosophy. Professor of Philosophy at Moscow University until 1922, when he was expelled to the West, Frank worked in exile until his