The content of K. E. Tsiolkovsky’s works not only has not lost its significance over time, but is also becoming more and more relevant. As a cosmist, K. E. Tsiolkovsky looked for universal approaches to resolving acute ideological and social problems. The position developed by him deserves close attention from everyone who would like to promote peace, tolerance, the development of active and moral human nature, the improvement of public institutions and the transformation of human society as a whole.