In "Theft by Finding: Diaries," David Sedaris reflects on personal experiences and the various complexities of life. He often explores themes of family, identity, and the humorous absurdities that arise in everyday situations. His observational wit highlights how people navigate their lives, often leading to comedic yet poignant revelations.

One notable quote from the book, "Even in a jar, that kid has outearned me," showcases Sedaris' ability to blend humor with deeper insights. It underscores the contrast between external appearances and personal accomplishments, emphasizing how value can be perceived differently by individuals.