The Redemption of Thinking. A Study in the Philosophy of Thomas Aquinas. 3 lectures, Dornach, May 22-24, 1920 (CW 74) by Rudolf Steiner with an epilogue and appendices by A.P. Shephard and Mildred Robertson Nicoll. (Three Lectures on the Philosophy of Thomas Aquinas given by Rudolf Steiner in the Goetheanum, Dornach, Switzerland, at Whitsuntide, 1920)
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8. Appendix 4: The Two Paths of Dionysius the Areopagite