Maska (The Mask) and Katar (translated as The Chain of Chance). In 1980, he published another set of reviews of non-existent works, Prowokacja. The following year sees another Tichy novel, Wizja lokalna, and Golem XIV. Later in that decade, Lem published Pokój na Ziemi (1984) and Fiasco (1986), his last science fiction novel. In the late 1970s and early 1980s, Lem cautiously supported the Polish dissident movement, and started publishing essays in Paris-based Kultura. In 1982, with martial law in Poland declared, Lem moved to West Berlin, where he became a fellow of the Institute for Advanced Study, Berlin (Wissenschaftskolleg zu Berlin). After that, he settled in Vienna. He returned to Poland in 1988. Final years From the late 1980s onwards, he tended to concentrate on philosophical texts and essays, published in Polish magazines (Tygodnik Powszechny, Odra, Przegląd, and others). They were later collected in a number of anthologies. In early 1980s literary critic and historian Stanisław Bereś conducted a lengthy interview with Lem, which was published in book format in 1987 as Rozmowy ze Stanisławem Lemem (Conversations with Stanisław Lem). That edition was subject to censorship. A revised, complete edition was published in 2002 as Tako rzecze… Lem (Thus spoke... Lem). In the early 1990s, Lem met with the literary critic and scholar Peter Swirski for a series of extensive interviews, published together with other critical materials and translations as A Stanislaw Lem Reader (1997). In these interviews Lem speaks about a range of issues he rarely discussed previously. The book also includes Swirski's translation of Lem's retrospective essay "Thirty Years Later", devoted to Lem's nonfictional treatise Summa Technologiae. During later interviews in 2005, Lem expressed his disappointment with the genre of science fiction, and his general pessimism regarding technical progress. He viewed the human body as unsuitable for space travel, held that information technology drowns people in a glut of low-quality information, and considered truly intelligent robots as both undesirable and impossible to construct. Writings Science fiction Lem's prose shows a mastery of numerous genres and themes. Recurring themes One of Lem's major recurring themes, beginning from his very first novel, The Man from Mars, was the impossibility of communication between profoundly alien beings, which may have no common ground with human intelligence, and humans. The best known example is the living planetary ocean in Lem's novel Solaris. Other examples include intelligent swarms of mechanical insect-like micromachines (in