“Wandering across the vast room, I stopped at a set of shelves as high as the ceiling, and holding about six hundred volumes - all classics on the history of Soalris, starting with the nine volumes of Giese's monumental and already relatively obsolescent monograph. Display for its own sake was improbable in these surroundings. The collection was a respective tribute to the memory of the pioneers. I took down the massive volumes of Giese and sat leafing through them. Rheya had also located som reading matter. Looking over her shoulder, I saw that she had picked one of the many books brought out by the first expedition, the Interplanetary Cookery Book, which could have been the personal property of Giese himself. She was pouring over the recipes adapted to the arduous conditions of interstellar flight. I said nothing, and returned to the book resting on my knees. Solaris - Ten Years of Exploration had appeared as volumes 4-12 of the Solariana collection whose most recent additions were numbered in the thousands.”

“I spent the afternoon in a bookstore. There were no books in it. None had been printed for nearly half a century. And how I have looked forward to them, after the micro films that made up the library of the Prometheus! No such luck. No longer was it possible to browse among shelves, to weigh volumes in hand, to feel their heft, the promise of ponderous reading. The bookstore resembled, instead, an electronic laboratory. The books were crystals with recorded contents. They can be read the aid of an opton, which was similar to a book but had only one page between the covers. At a touch, successive pages of the text appeared on it. But optons were little used, the sales-robot told me. The public preferred lectons - like lectons read out loud, they could be set to any voice, tempo, and modulation.”

“Giese was an unemotional man, but then in the study of Solaris emotion is a hindrance to the explorer. Imagination and premature theorizing are positive disadvantages in approaching a planet where—as has become clear—anything is possible... The fact is that in spite of his cautious nature the scrupulous Giese more than once jumped to premature conclusions. Even when on their guard, human beings inevitably theorize.”

“For some time there was a widely held notion (zealously fostered by the daily press) to the effect that the 'thinking ocean' of Solaris was a gigantic brain, prodigiously well-developed and several million years in advance of our own civilization, a sort of 'cosmic yogi', a sage, a symbol of omniscience, which had long ago understood the vanity of all action and for this reason had retreated into an unbreakable silence.”

“I am a product [...of] endless books. My father bought all the books he read and never got rid of any of them. There were books in the study, books in the drawing room, books in the cloakroom, books (two deep) in the great bookcase on the landing, books in a bedroom, books piled as high as my shoulder in the cistern attic, books of all kinds reflecting every transient stage of my parents' interest, books readable and unreadable, books suitable for a child and books most emphatically not. Nothing was forbidden me. In the seemingly endless rainy afternoons I took volume after volume from the shelves. I had always the same certainty of finding a book that was new to me as a man who walks into a field has of finding a new blade of grass.”

“Before unearthing this letter, I had questioned myself about the ways in which a book can be infinite. I could think of nothing other than a cyclic volume, a circular one. A book whose last page was identical with the first, a book which had the possibility of continuing indefinitely.”

“I mean your borrowers of books - those mutilators of collections, spoilers of the symmetry of shelves, and creators of odd volumes.”