“Semiotics is in principle the discipline studying everything which can be used in order to lie. If something cannot be used to tell a lie, conversely it cannot be used to tell the truth: it cannot in fact be used "to tell" at all.”

“The order that our mind imagines is like a net, or like a ladder, built to attain something. But afterward you must throw the ladder away, because you discover that, even if it was useful, it was meaningless.”

“If you want to use television to teach somebody, you must first teachthem how to use television.”

“There, I said to myself, are the reasons for the silence and darkness that surround the library: it is the preserve of learning but can maintain this learning unsullied only if it prevents its reaching anyone at all, even the monks themselves. Learning is not like a coin, which remains whole even through the most infamous transactions; it is, rather, like a very handsome dress, which is worn out through use and ostentation. Is not a book like that, in fact?”

“Listening doesn't mean trying to understand. Anything, however trifling, may be of use one day. What matters is to know something that others don't know you know.”

“The lunatic is all idée fixe, and whatever he comes across confirms his lunacy. You can tell him by the liberties he takes with common sense, by his flashes of inspiration, and by the fact that sooner or later he brings up the Templars.”

“[...] there is one inexorable law of technology, and it is this: when revolutionary inventions become widely accessible, they cease to be accessible. Technology is inherently democratic, because it promises the same services to all; but it works only if the rich are alone using it. When the poor also adopt technology, it stops working. A train used to take two hours to go from A to B; then the motor car arrived, which could cover the same distance in one hour. For this reason cars were very expensive. But as soon as the masses could afford to buy them, the roads became jammed, and the trains started to move faster. Consider how absurd it is for the authorities constantly to urge people to use public transport, in the age of the automobile; but with public transport, by consenting not to belong to the elite, you get where you're going before members of the elite do.”