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It's the Hay Festival time of year again, with writers and thinkers from all over the world flocking to tiny Hay-on-Wye for what Bill Clinton once called "the Woodstock of the mind".
Over on reddit users have been debating the merits of their favourite books - so with the caveat that the tyranny of the majority applies - here are the most upvoted choices.
What would you add to the list? Let us know in the comments below.
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