2013 Reprint of 1922 Edition. Exact facsimile of the original edition, not reproduced with Optical Recognition Software. In 1920 Tertium Organum was published in the USA; Claude Bragdon one of the people responsible for translating and publishing the English edition stated at the time; ‘In naming his book Tertium Organum Ouspensky reveals at a stroke that astounding audacity which characterizes his thought throughout… Such a title says, in effect: Here is a book which will reorganize all knowledge. The Organon of Aristotle formulated the laws under which the subject thinks; the Novum Organum of Bacon, the laws under which the object may be known; but the Third Canon of Thought existed before these two, and ignorance of its laws does not justify their violation. Tertium Organum shall guide and govern human thought henceforth.