Answer:
Because he wants to give people a chance to return to the world without literature. This means that Captain Beatty recognizes people's curiosity about books.
Step-by-step explanation:
Captain Beatty is a man of great knowledge, as he is already an avid reader and knows the importance of books. He also recognizes people's curiosity in relation to books and for this reason he is very contradictory in his positions. When he directs the salamander after the first alarm, it is because he knows that someone relevant will have the house burned out and he wants to give this person a second chance before this happens.