I laid stress in my Philosophie der Freiheit which was written in the early nineties, on the connection of the experience of freedom with what I called “pure thinking”. […] When we permeate pure thinking with moral ideas and impulses — that is, with ideas and impulses that are not associated with desires, or with sympathies and antipathies, but solely with pure, loving devotion to the deed that is to be done — when we do this and allow the impulse to quicken in our soul to action, then the action we perform is truly free.
Source: Rudolf Steiner – GA number unknown – The Threshold in Nature and in Man – Basle, February 1, 1921
The great Rudolf Steiner Quotes Site 