Tertium Organum - 1922 — P.D. Ouspensky

A truly mind expanding writing that combines science with mysticism with unprecedented elegance. He presents the world we live in as a multi dimensional world and time as a motion through this world. But this isn't a cold and purely analytical explanation but a masterful presentation filled with similes and analogies. The physics and mathematics are tightly integrated with mystic teachings and together they build a stronger base. If you want to stretch the reach of your imagination and understanding of science, religion, mathematics and mysticism you can't ignore this work