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"The Universe in a Nutshell" learning about black holes and time travel is something that no matter how often you read about it still makes you think different things. I still am considering how I could time travel
The Complete Miss Marple from Agatha Cristie, because it is the thickest book according to the Guinness World Records book. over 4.000 pages will be a great weapon to use, not to mention a longlasting fire supply.
City of Thieves, because sometimes a whole slew of things can happen but ya always have to remember that a little humour is always welcome in even the gravest moments and can change things a whole lot.