Kaluga: Sphere, 1931. — 40 s. Socio-philosophical essay in relation to the ideas of mankind's exploration of the universe . One of the most remarkable works in the genre of social utopia in relation to the ideas of mankind’s exploration of the whole universe. First published by K. E. Tsiolkovsky in Kaluga in 1925 with the subtitle: "Compend. March . 1925. « The second edition was also published in Kaluga after 5 years. Published in 1st Edition . The final part - "Supplements to the "Monism of the Universe" - is extracted by us from the book: K. Tsiolkovsky . The Cause of Space . Kaluga . 1925. There are some minor cuts in the text. "My sermon, in my eyes, is not even a dream, but a strictly mathematical inference from accurate knowledge. I want to delight you in the contemplation of the Universe, from the waiting fate of all, from the wonderful history of the past and the future of each atom. This will increase your health, lengthen your life, and give you the strength to endure the vicissitudes of fate. You will die with joy and in the conviction that you will find happiness, perfection, infinity and the subjective continuity of a rich organic life. The Big One