How is the theme of crossing boundaries explored in Fahrenheit 451?

Montag crosses boundaries as soon as he is enlightened by Clarisse. He passes from ignorance to knowledge. The fireman's responsibility is to burn books, and therefore destroy knowledge. Through these actions, the firemen promote ignorance to maintain the sameness of society. After befriending Clarisse, Montag finds himself unable to accept the status quo, believing life is more complete, true and satisfying when knowledge is welcomed into it. After making this discovery, Montag fights against ignorance, trying to help others welcome knowledge into their lives. For example, when his wife's friends come over, he forces them to listen to poetry. Although they become extremely upset after listening to what he reads, they are able to experience true emotion. In Montag's view, this emotion will give these women a fuller and more satisfying life.