The Papal ‘Index of Prohibited Books’ was a list of books banned by the Vatican for being immoral or theologically wrong.
Below you can see the 1838 edition of the Index, which shows Hobbes’s Leviathan being banned in 1703. Curiously, they’ve banned the Latin translation of 1668, not the original English version of 1650. To cover themselves, a few years later they banned all of his other writings too.
Thanks to Professor Dr Winfried Schröder of Marburg University for allowing me to take these pictures.