Book excerpt: Intuitive Thinking as a Spiritual Path is Rudolf Steiner's most important work. In it he explains the two aspects of free will: freedom of thought and freedom of action. This landmark book explores free will from a completely fresh and unique perspective. If an idea is to become action, man must first want it before it can happen. Such an act of will therefore has its grounds only in man himself. Man is then the ultimate determinant of his action. He is free. -Rudolf Steiner