Giordano Bruno was on the sticky end of a scam by Ficino, whose translation of the Corpus Hermeticum was a load of nonsense (http://wouterjhanegraaff.blogspot.co.uk/2013/11/butchering-corpus-hermeticum-breaking.html). And therefrom descends the entire heap of BS known as modern esotericism. So no wonder the Vatican had a bonfire.