What does Faber tell Montag about books in Fahrenheit 451 by Ray Bradbury?

In Part Two of the novel, Montag visits Faber's home, and the two characters have an enlightening conversation regarding the significance of literature. Faber begins by calling Montag a "hopeless romantic" and proceeds to highlight the numerous positives found in the literary world. Faber tells Montag that books have quality and provide an in-depth, detailed look at life. Montag learns that good literature holds a mirror up to society, which can be difficult to experience and accept for some people—one reason why books are censured in Bradbury's dystopian nation.
Faber goes on to tell Montag that books provide necessary leisure time for individuals to collect their thoughts and process the world around them. In a fast-paced society, it is important to slow down, and reading a book provides the opportunity to relax. Literature also impacts readers to act upon the information they have digested. Readers can be influenced by a particular book and decide to change the world for the better by solving a social, political, or scientific problem. Faber also explains to Montag the importance of preserving knowledge in order for humans to learn from their past mistakes, which is another significant reason as to why books are necessary.

When Montag visits Faber at his apartment, he expresses his newfound belief that books might be the answer to his (and society's) miserable state. When Montag says this, Faber is quick to point out something important about books:

It's not books you need, it's some of the things that once were in books.

In other words, the book, as a physical object, is not important; a book is nothing more than paper and ink. It is the words written on the paper which really matter. These "pores of life," as Faber calls them, encourage the reader to think and question the world.
Moreover, for books to achieve their potential, people must have enough "leisure" time to digest their message. They must also have the intellectual and social freedom to "carry out actions" based on what they have learned from reading.
For Faber, then, it is not the books which are important but rather the ability to read and absorb the information without interference from the rest of society.