In 1918 Dr. Steiner published a revised edition of the Philosophie
der Freiheit. For the translation of the new passages added to, and
of the incidental changes made in, this revised edition I am indebted
to Mr. Hoernlé, now Professor of Philosophy in the Armstrong College
(Newcastle-upon-Tyne), University of Durham.
At the author's request I have changed the title to Philosophy of
Spiritual Activity, and throughout the entire work "freedom" should
be taken to mean "spiritual activity."
Dr. Steiner's Ph. D. Thesis on "Truth and Science," originally
published as a prelude to The Philosophy of Freedom, has, with his
consent, been translated for this edition and been added at the end
of this volume.