The Permanent Instruction of the Alta Vendita is a document, originally published in Italian in the 19th century, purportedly produced by the highest lodge of the Italian Carbonari and written by "Piccolo Tigre," codename for Giuseppe Mazzini. The document details an alleged Masonic plan to infiltrate the Catholic Church and spread liberal ideas within it. The Carbonari had strong similarities to Freemasonry and so the document is seen by some as a Masonic document. In the 19th century, Pope Pius IX[3] and Pope Leo XIII both asked for it to be published.