What has Montag been able to memorize in Fahrenheit 451?

In Bradbury's "Fahrenheit 451", Montag isn't at first sure about why he feels the urge to memorize portions of The Bible. He senses that it is important; he is also beginning to realize that it is a treasure that might soon be lost to humankind; and then he begins to act on these feelings. It isn't, however, until later in his journey that he learns clearly why preservation of classic texts is vital for himself and society: they contain insights that help human beings live most happily and most truly.