Tertium Organum is P. D. Ouspensky’s guidebook for expanding consciousness. In this classic early work of the famous Russian philosopher mystic, you will find a powerful explanation of how to attain access to hidden realms of reality. Our experience of time and space is not an accurate reflection of what is real. It is simply the way we have been trained to see the world, but we can also learn to see and think in higher dimensions. When we retrain ourselves to see four-dimensionally we open a perceptual world of reality previously invisible to us. This book presents a fascinating description of the nature and character of four-dimensional reality. And you will discover that just as two-dimensional squares become the surfaces of three-dimensional cubes, our three-dimensional world is the surface of a fourth-dimensional reality. Every place and every moment that exists in our world of linear time and three-dimensional space is directly accessible to any other place in time and space through the fourth dimension. According to Ouspensky, if we change the way we think about reality, we can open our perception to the true interconnected oneness of existence. Drawing on the wisdom of many great realizers and luminaries, Ouspensky presents a compelling and inspiring argument for the existence of the miraculous. This is a book of wisdom and a glimpse into the workings of a brilliant mind. It is not an easy text, but careful reading can yield a glimpse of another dimension. You just might discover that everything around you, including your own body, is the three-dimensional surface of another reality.