The Cyberiad
The Cyberiad (Polish: Cyberiada) is a series of humorous short stories by Stanisław Lem. The Polish version was first published in 1965, with an English translation appearing in 1974. The main protagonists of the series are Trurl and Klapaucius, the "constructors".
The vast majority of characters are either robots or intelligent machines. The stories focus on problems of the individual and society, as well as on the vain search for human happiness through technological means. Two of these stories were included in the book The Mind's I.
Trurl and Klapaucius
Trurl and Klapaucius are brilliant (robotic) engineers, called "constructors" (because they can construct practically anything at will), capable of almost God-like exploits. For instance, on one occasion Trurl creates an entity capable of extracting accurate information from the random motion of gas particles, which he calls a "Demon of the Second Kind". He describes the "Demon of the First Kind" as a Maxwell's demon. On another, the two constructors re-arrange stars near their home planet in order to advertise.