In Bradbury's classic novel Fahrenheit 451, Captain Beatty and Professor Faber share many similar character traits but have opposite opinions regarding the government's censorship policy and individual rights.
Captain Beatty and Faber are both well-read characters who possess an impressive knowledge of literature. Captain Beatty demonstrates his robust literary knowledge several times in the story by quoting various authors from memory and cleverly manipulating significant texts while lecturing Montag. Similarly, Faber also reveals his profound literary knowledge during his interactions with Montag.
In addition to being educated, intelligent men, Beatty and Faber have also been significantly affected by their intellectual pursuits. Captain Beatty is portrayed as a jaded intellectual, who admits to Montag that attempting to grasp the extensive knowledge of the universe made him feel "bestial and lonely." Similarly, Faber also feels strongly about his intellectual pursuits and eventually risks his freedom helping Montag undermine the fireman institution.
Captain Beatty is also depicted as a passionate, aggressive man who is determined to dissuade Montag from reading books and is a staunch proponent of the government's censorship policy. In contrast, Faber is a soft-spoken, timid man who is initially reluctant to help Montag. Instead of forcing his opinions on others like Captain Beatty, Faber gently describes the positive aspects of literature to Montag.
One could also argue that Captain Beatty is less courageous than Faber and chooses death instead of challenging the ignorant majority. Montag believes that Captain Beatty wanted to die, while Faber courageously decides to travel to St. Louis, where he plans on printing books.
Both men also significantly influence Montag to change the trajectory of his life. Captain Beatty makes Montag realize that his occupation is unfulfilling and destructive while Faber facilitates his transformation by guiding Montag in his intellectual journey. Overall, Captain Beatty and Faber share similar intellectual qualities but subscribe to completely different ideologies regarding censorship, literature, and independent thought.