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The fourth volume of the Lem's Six Books includes the philosophical and sociological work The Sum of Technology, which was published in 1964. Stanislav Lem devoted it to the issues of cybernetics, astronautics and futurology. It would seem that the passage of time and progress in the technical sphere and the development of science should have denied or even refuted many of the writer's statements. But no - the Polish philosopher's thoughts on the development of the modern world are surprisingly fresh and relevant. Taking into account the historical experience of mankind, Lem subtly analyses its existence in the present and the supposed future and predicts the eventual ways of the earthly civilisation's progress, as well as its possible contact with its brothers in mind, although he considers it unlikely.

The book requires a thoughtful reader, and if you have one, you are guaranteed a fascinating journey into the wonderful realm of cosmophilosophy.