The theme of Anne Frank is Isolation

Anne feels isolated and cut off from her family and the other members of the Secret Annex throughout The Diary of Anne Frank, even while the group is crammed together in shared isolation from the world. The divide between the "inner world" of the Secret Annex and the "outer world" of Holland is mirrored in the divide between Anne’s "inner world" and the "outer world" of the Secret Annex.

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The Second Theme Is Mortality

Anne records the experiences of her adolescence in her diary: the pages that would later become The Diary of Anne Frank. She goes through all the typical trials and tribulations of teen life, despite the fact that she is not living in a normal context. She fights with her mother and sister, believes that nobody understands her, thinks that she is the one everybody picks on, fantasizes about boys she’s known in the past, and falls in love head over heels with somebody she should probably leave alone.

She’s just like all of us, even if she is hiding from the Nazis during the years she is growing up.