One (The Stranger)

The first, first passage, is much more formal than the other. This conveys a respectful and sympathetic character. As opposed to the other passage, where the character seems more informal, less respectful, and less sympathetic. The character in the first passage uses formal words and formal language, "I cant be sure" (as opposed to "I don't know"), "Which leaves the matter doubtful" (as opposed to "That doesn't mean anything")...etc.