Man has gone out to explore other worlds and other civilizations without having explored his own labyrinth of dark passages and secret chambers, and … - Stanisław Lem

I hoped for nothing. And yet I lived in expectation. Since she had gone, that was all that remained. I did not know what achievements, what mockery, even what tortures still awaited me. I knew nothing, and I persisted in the faith that the time of cruel miracles was not past.

...it gave me a little plastic book with four fold-outs, maps of the city's transit system. When I wanted to go somewhere, I touched the silver-printed name - street, level, square - and instantly on the map a circuit of all the necessary connections lit up. I could also travel by gleeder. Or by rast. Or - finally - on foot; therefore, four maps

. . . according to Lem's Law, 'No one reads; if someone does read, he doesn't understand; if he understands, he immediately forgets' — owing to general lack of time, the oversupply of books, and the perfection of advertising.