23 children's books you need to read again as an adult

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Kids love this 1936 story about a bull who doesn't want to fight, but it was actually seen as propaganda and banned by Hitler.

Thursday is World Book Day, so what better way to celebrate than to check out some of the greatest classics from your childhood?

It just so happens that there are a lot of important life lessons, conspiracy theories, and hidden messages in the books we loved as children - we just probably didn't pick up on them back then.

With help from The New York Public Library's Youth Materials Specialist, Betsy Bird, we put together a list of 23 books worth giving a second read.