In part two, "The Sieve and the Sand," Faber and Montag are discussing what needs to happen in order for society to appreciate literacy again. Faber says that three things must exist together in order for literacy to survive again:
"Number one, as I said: quality of information. Number two: leisure to digest it. And number three: the right to carry out actions based on what we learn from the interaction of the first two" (85).
The problem with the first element of literacy is that the firemen have been burning books for who knows how long. Quality information has been watered down and obliterated for so long that every bit of information that the society currently has is based on hedonism, not on the quality of ideas and concepts garnered from history or great thinkers throughout history.
The second element that Montag's society needs is not necessarily more leisure time, but for the populace to appreciate the quality information found in books. They need time to learn about the importance of literacy and then time to digest it and to appreciate it.
But the most important of these three elements is the third one. At the moment of Faber and Montag's discussion, they fear the consequences of reading, learning, and literacy. Without the third option—the freedom to be literate and to act on ideas gained from books—the other two elements are obsolete. That is why Faber and Montag decide to attack the firemen, those whom the public fears, so that the third element can make the first two possible.