In Russian. Short description: K. Tsiolkovsky. Universe monism. Kaluga, 1931. Life edition. Konstantin Eduardovich Tsiolkovsky (1857-1935) – Russian and Soviet self-taught scientist who developed the theoretical issues of astronautics, and an esoteric thinker who dealt with the philosophical problems of space exploration. “Monism of the Universe” is a philosophical treatise by K. E. Tsiolkovsky, originally published in 1925 in Kaluga at the expense of the author in a limited edition of 2000 copies. Tsiolkovsky writes this work in his declining years and discovers in it secret thoughts that have worried him all his life. According to the scientist, it was the ideas expressed by him in this work that should have approved his name for centuries. In it, he called himself the purest materialist. Please feel free to contact us for a detailed description of the copies available. SKUMS001948