Geschichte und Kritik der Grundbegriffe der Gegenwart

The Problem Of Human Life As Viewed By The Great Thinkers From Plato To The Present Time, Volume 14

Can we still be Christians?

Present-Day Ethics In Their Relations To The Spiritual Life

The problem of human life

Christianity and the new idealism

The meaning and value of life

The life of the spirit

Philosophy of Life

Life's Basis and Life's Ideal

Die Religionsphilosophie in Deutschland : In Ihren Gegenwärtigen Hauptvertretern